Not in Sweden but....
Thought not in Sweden, the Copenhagen Marriott is in central Sweden is fairly new and by ferry isn't a long jaunt to Sweden. Don't know your particular plans but it might be an option. I stayed there in May and the staff were very efficient, had my early checking available (red-eye arrival) and were keen to provide me tips about getting around the city and seeing the sites. Would recommend. The concierge lounge is huge and provides a fairly good variety of food and beverage and a great view of the river.