Great location but Noisy on Lex
The hotel is located in a great area on the corner of 47th and Lexington Ave. It's close to Rock Center, a quick 15 minute walk to the theater district and an easy walk to a couple of subway stops.
So here's the issue with the RS Hotel. The rooms are tidy, not dirty but not super clean. It was a little dusty, but no big deal. The area rug was stained (because it was a white carpet unlike most hotels that have dark carpets so you can't see stains). The bathroom was clean, but it had a half glass shower door because it was one of those longer showers. So a wet floor can become an issue.
But since most rooms face Lex and there is also a nightclub outside of the hotel, you are going to hear noise a good portion of the night. The typical NY sirens, honking, people talking (or screaming) ... is unavoidable when you are facing any major street or avenue. 
But for $229 (including tax), this hotel was a great deal for a NYC property. So I'm giving this a 4 star review for location and 2 star for noise since you're facing a major street.