Location, location, location! This was the perfect sightseeing base for our family of four with two young children. William's apartment was very clean, comfortable, and well stocked. We particularly loved the fantastic coffee machine . . .it really helped ease our jet lag. 😉. We could easily walk to everything we needed. . . cafes, restaurants, public transit, grocery store, the awesome little playground in Gamla Stan, even with a six- and nine-year-old on tow. All of the major sights could be reached either by a short walk or convenient public transit.
We definitely made use of the laundry machines and they worked well.
I would happily stay with William again if we ever make it back to beautiful Stockholm!