great idea,
this is what they do in Shipshewana, Indiana for the pj party they get motel rooms, sew in their rooms and go back and forth to see what everyone is making, take food and eat out, great idea!
also I checked with a Bed and Breakfast as they hold quilting and scrapbooking retreats and really cheap like $40.00 a person
nice big bedrooms, downstairs is a big room for sewing, big kitchen and also has washer and dryer, you walk to another building to dining room to eat your free breakfast
also sometimes you can rent a big room at a college and sew sew sew and stay in dorms cheap during the summer
also some hotels will give out group rates for so many # of rooms