Alsik Hotel & Spa is Sønderborg’s iconic hotel and premier conference venue – beautifully situated right on the banks of the Alssund.
Behind the striking architecture, designed by Henning Larsen Architects as part of Frank Gehry’s visionary harbour plan, lies an experience where Nordic design, sustainability, and uncompromising quality go hand in hand.
The hotel stretches across 19 floors and offers 190 stylish rooms and suites, two distinct restaurants – including the Michelin-starred Restaurant Syttende – as well as Denmark’s largest spa and wellness universe, covering an impressive 4,500 m².
At Alsik, it’s all about the complete experience. Every detail is thoughtfully designed to create inspiring surroundings where people connect, ideas take shape, and memorable moments are made.
Alsik offers 190 elegant rooms, including 21 junior suites and suites – all furnished in light, Nordic style with natural materials, calming tones, and clean lines.
Floor-to-ceiling windows let in an abundance of daylight and offer views over the city, the fjord, or the Alssund, creating a serene connection between the indoors and the surrounding landscape.
At Alsik Hotel & Spa, you’ll find conference and event facilities that meet both ambition and aesthetics – whether you’re planning a conference, a one-day meeting, a corporate event, or a stylish wedding.
With 1,500 m² of state-of-the-art meeting space, including nine flexible meeting and conference rooms and an exclusive boardroom, we offer the perfect setting for everything from intimate workshops to large-scale events for up to 300 participants.
All rooms are equipped with cutting-edge AV and IT technology, and our dedicated events team ensures that every detail – from planning to execution – runs seamlessly.
For larger gatherings, we also offer Sergenten, our separate conference and event venue, which provides even greater flexibility for exhibitions, scaled setups, and personalised celebrations in unique surroundings.
Restaurant
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Seats in restaurant
Seats in private dining room
Alsik is home to two unique restaurants, each with its own culinary expression, atmosphere, and personality – all rooted in a love of craftsmanship, seasonal ingredients, and flavours that range from the familiar to the surprising.
Restaurant Alsik presents the best of both local and global cuisines – a culinary journey where classic recipes from around the world meet the finest ingredients from Southern Jutland. The menu reflects the seasons and honours traditional cooking, reimagined with modern finesse. From comforting favourites to inspired new takes, each dish is a tribute to taste, balance, and the joy of good food.
Syttende, located at the top of the hotel with panoramic views of Sønderborg and the Alssund, is a Michelin restaurant and an extraordinary gastronomic experience. Here, every dish explores the sublime, shaped by technical excellence, precision, and the uncompromising use of top-quality ingredients. Syttende represents fine dining at its most refined.
Freia Bar & Lounge offers an elegant and relaxed atmosphere, where guests can enjoy handcrafted cocktails, fine wines, and local specialties in a tranquil and inviting setting – ideal for winding down or simply pausing for a moment of calm.
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Spa
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Green areas
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Collective agreement for employees
The hotel enjoys a central location in Sønderborg, offering tranquillity and scenic views of nature and the water – while still being easy to reach, no matter how you travel.
There are direct flights from Copenhagen with Alsie Express, and the flight takes just 35 minutes.
The hotel is easily accessible by car via motorway E45 and Route 8, and Sønderborg Station is just 1.1 km away – perfect for a pleasant walk along the waterfront. EV charging stations are also available.
Alsik was built with sustainability at its core and is a proud part of Sønderborg’s ambitious ProjectZero, which aims to make the region 100% CO2-neutral by 2029 – twenty years ahead of the rest of Denmark.
The hotel was constructed with a strong focus on environmentally friendly solutions such as solar power, green district heating, and energy recovery. Sustainability is embedded throughout daily operations – from sourcing local ingredients and minimizing food waste to using eco-friendly cleaning products and advanced waste sorting systems.
Alsik is also Green Key certified, meeting a wide range of international standards for environmentally responsible hospitality – all without compromising the guest experience.
Alsik offers the ideal balance between professional focus, mental clarity, and sensory wellbeing. At the heart of it all is Alsik Nordisk Spa & Wellness – Denmark’s largest spa, featuring more than 60 unique experiences across four floors and 4,500 m². Inspired by Nordic nature, light, and traditional bathing rituals, the spa combines water, heat, and silence to create a deeply restorative atmosphere.
The spa can easily be integrated into your program and offers a unique opportunity for rest and rejuvenation – whether through saunagus, therapeutic baths, or simply quiet moments of stillness.
In addition, we offer a wide range of activities in collaboration with local partners – from guided cycling tours and mindfulness to tastings, team-building experiences, and cultural walks through historic Sønderborg. Whether your goal is reflection, connection, or just a new experience, we tailor each activity to suit your needs and objectives.
Located right by the Alssund, Alsik is surrounded by water, light and open horizons. Here, the energy of the city blends with a rare sense of calm, where the presence of nature is felt in both the view and the atmosphere.
The nearby waterfront promenade and green coastal areas provide a natural sense of balance and wellbeing – perfect for stillness, reflection and fresh air. No matter the season, the water invites you to clear your mind – and in summer, you can enjoy a refreshing dip or a quiet moment by the shore, just steps from the city centre.
At Alsik, gastronomy is an experience in its own right. Whether you’re planning an informal dinner, a festive reception or an exclusive culinary journey, we create a dining setting that enhances the entire event.
With two distinctive restaurants and a strong focus on quality, seasonal ingredients and flavours with personality, the menu and format are tailored to your needs. Add to that professional service, atmospheric surroundings and the option to round off the evening with a drink in Freia Bar & Lounge.
With its unique location by the Alssund, Alsik is set in an area where nature, culture and history come together. Take a stroll along the scenic harbour promenade, visit Sønderborg Castle and Dybbøl Mill – or head out on an excursion to the beautiful Kær Peninsula.
The city’s vibrant centre offers cosy cafés, charming shops and local culinary experiences – all within walking distance of the hotel. Sønderborg is the ideal starting point for combining business with inspiration, presence and experiences that make a lasting impression.
At Alsik, we offer the ideal setting for celebrating anything from annual gatherings to major company milestones. With flexible spaces, exquisite dining and a warm, elegant atmosphere, we tailor your corporate celebration to your vision.
Whether you’re dreaming of a refined dinner with views over the Alssund, a relaxed evening with music and bar service, or a complete celebration package including overnight stays and spa access – we’ll make sure the experience is unforgettable, from the first welcome to the final toast.
Alsik provides the perfect setting for connection and shared moments – both indoors and in the open air. In collaboration with local partners, we offer a wide range of teambuilding and activity options tailored to your purpose, group size and goals.
From tastings and mindfulness to historic walking tours, cycling and nature-based experiences – the possibilities are many. These activities strengthen relationships, boost energy and inspire both mind and heart.
Extraordinary nature experiences await around Alsik. From the hotel, there is direct access to green spaces, walking paths along the water and the wide open landscape of the Kær Peninsula.
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