you might look through or do a search on the Trip Reports BB. I seem to remember a few people mentioning they used it and liked it. I think it's called Club Dolphin and it's actually located in the Dolphin but certainly open to guests of the Swan as well. I'm not sure about in-room babysitting.
Is Camp Dolphin open to all Disney resort guests? We'll be staying at the WL and I wanted to put my twins in Camp Dolphin because they have an afternoon session from 1:30pm-4:30pm.