The
William Penn House doesn't do singles (except for the handicapped), but it seems to have dorm availability for at least the first week or two for $40-45 a night. It's a
Quaker boarding house, but you don't have to be Quaker to stay there. It should be able to provide a nice quiet place to study. No alcohol, drugs, or smoking are allowed on premises, and they take their quiet hours (10-8) pretty seriously.