Most hotels will provide laundry service for their guests.
A lot of campingsites, cottages and youth hostels also provide wash machines for their guests.
Due to that all apartment buildings provide wash machines to their tenants, the market for launderettes in Sweden is low. Hence most launderettes only take shirts, dry cleaning and rugs. One can always ask, though.
There are a few exceptions. In Stockholm there is a Laundromat with machines for self-service.
Tel: +46 (0)8 34 64 80
113 25 STOCKHOLM
tel: 08-642 69 41