Danish Luxury

Hotels By the sea

Alsik Hotel & Spa

A 19-storey hotel of 190 rooms on the old harbour front of Sønderborg, facing Alssund, with a spa of 4,500 square metres and the restaurant Syttende.

Opened
2019
Company
Bitten & Mads Clausens Fond
Address
Nørre Havnegade 21, 6400 Sønderborg

Visit alsik.dk

The hotel tower on the harbour at dusk
The hotel tower on the harbour at dusk
A room with windows over the old town
A room with windows over the old town

Pictures © Bitten & Mads Clausens Fond, from alsik.dk.

Why it is renowned

The MICHELIN Guide added Alsik Hotel & Spa to its hotel selection for Denmark, marked as new.12 It describes the tower as the centrepiece of Frank Gehry's plan for Sønderborg's old industrial harbour, and notes that its restaurant Syttende holds a Michelin star.2

The story

The masterplan for Sønderborg's harbour front was drawn up by the Canadian architect Frank Gehry, and Alsik, opened in early summer 2019, is part of it.3 Henning Larsen Architects designed the building.3 It is 70 metres tall with 19 floors and 24,800 square metres, the largest hotel in the Danish-German border region.3 The Bitten & Mads Clausen Foundation, owner of Danfoss, built it with PFA Pension; the first sod was turned on 13 November 2015 and the hotel opened on 6 May 2019.4 It ran under the Steigenberger brand until 1 November 2025, when it became independent and took the name Alsik Hotel & Spa.4 The 190 rooms and suites measure from 25 to 103 square metres, with floor-to-ceiling windows over Alssund, the harbour and the town.5 The spa spreads over four floors.6 The name and logo come from the alsike clover.3

What to know it by

  • Alsik Nordisk Spa & Wellness6Spa and wellness over 4,500 square metres and four floors
  • Syttende2Restaurant with a Michelin star, South Jutland produce
  • Point of View4Public viewing deck on the 16th floor, 64 metres up
  • Bitten & Mads Clausen Suite5Suite on the 16th floor with two bedrooms
Sources
  1. Hotels in Denmark, MICHELIN Guide. guide.michelin.com, read 29 September 2026.
  2. Alsik Hotel & Spa, Sønderborg, MICHELIN Guide. guide.michelin.com, read 29 September 2026.
  3. Bag om Alsik, Alsik Hotel & Spa. alsik.dk, read 29 September 2026.
  4. Alsik Hotel, Wikipedia (Danish). da.wikipedia.org, read 29 September 2026.
  5. Værelser & suiter, Alsik Hotel & Spa. alsik.dk, read 29 September 2026.
  6. Alsik Hotel & Spa. alsik.dk, read 29 September 2026.

Last checked 30 September 2026, against the maker's own pages.