It's a bit redundant mentioning Yelo since it's appearing in all sorts of guides, but it really deserves the praise.
Pop in for tea, a massage, and a nap in one of their custom-made sleep pods. You'll leave feeling 10ft tall.
315 W 57th street, New York
+1 (212) 245-8235
www.yelonyc.com
Google map: bit.ly/htiTVl