I will be in Providence for 2 weeks where is the best places to visit? Thanks

all you need to do is read the reviews in the RI section. All the info you need is there. You might also check other boards. CLReviews.com and USASexGuide.com are good ones. You will find more than enough information to set you in the right direction.
I don't think it is fair to expect the members to do your research for you.

ONE SPA is the BEST for FS in the NEW ENGLAND area and NORTH MAIN STREET SPA is the BEST for FULL BODY MASSAGE. Do not go to ONE or NMS on Friday or Saturday because the place are really BUSY and you will not received any GOOD customer service. The BEST days to visit are Wednesday and Sunday afternoon when the place are not that BUSY.