We found this quite by accident two years ago when coming into Rostock on a ferry from Denmark fleeing the bad weather there. Initially we booked for a night, then extended for a week, and could happily have stayed for longer. The rooms and suites are superbly decorated, there are a number of restaurants on site, including the Michelin Starred restaurant "Der Butt". You can watch the ferries and cruise ships coming in and out of the channel from your balcony, or overlook the marina with all the colour-changes that a superb sunset brings. We enjoyed the spa and stunning indoor pool, which is great for spending time in when the weather outside is uninviting (which can be fairly common this far north). The spacious bars with comfortable seating in the main foyer are great to lob into for coffee, a drink or just for people-watching. An all-round great experience.