I've just come from a night at the Villa Maritime hotel on Marstrand Island, off the west coast of Sweden. I was so impressed that I jumped to write a review when I saw this site.
The hotel is right on the waterfront, only steps off the ferry. Upon stepping into the room, my first impression is that it was larger than my first apartment. A 2-room suite, living room and bedroom. The living room area also contained a full kitchen and dining table. The kitchen was fully equipped with utensils, etc. Because I had a ground-floor room, it also had a sitting area outside with lounge chairs. The hotel overlooks the "gap" between the island and the mainland, which is perhaps a hundred yards. Marstrand has gorgeous North Sea scenery. Rooms looking the other way would have a view of the Carstens fortress, which dramatically tops off the island.
Everything was very clean and efficient. Large closet space would make this a comfortable place for a lengthy stay.
My only disappointment is that I was traveling on business, only here for the one night because all the hotels in Gothenburg were full. Thus I missed out really being able to enjoy the hotel and the island. I certainly plan to come back someday, and suggest you should too!