This is a place you book for price and location. Be aware that it is located in the basement, with a very clearly audible karaoke facility above. Earplugs are necessary, but provided. The flat itself is very no frills (e.g. no bathroom sink / mirror where one could shave etc) but has everything you need to survive. Shinjuku proper and Kabukicho are 10-15 mins walk away, which is absolutely amazing considering Tokyo's size and spread. Price was also good.