A lot of coffee shops in PVD dont seem to stay open very late, but my favs are Daves Coffee since you can always go down to the river with your coffee if seats are taken. The Shop has the nicest staff and is a nice outdoor hang as well. Coffee Exchange is good and reasonably priced and again, right by the river. I like the vibe of the Federal Hill Seven Stars. RISD museum is free on Sunday and has a nice hangey-outy coffee shop too.