we chose shu's place because it is centrally located in the shinjuku neighborhood - within walking distance of the metro and train stations of shinjuku. this allowed for easy access to all of tokyo as well as to other parts of japan. access was also easy to and from the airport.
in terms of finding the apartment, we took a cab from the train station - and even the cab driver had trouble finding it - as did google maps. we finally had someone help us. what helped subsequently was getting a map and marking the location - since you can get to the apt via a main street or side streets.
the apartment itself was very comfortable. we had a nice sized bedroom-livingroom equiped with all of the necessities for a comfortable stay. there is an adjacent bathroom as well as a small kitchenette with a refrigerator and enough cutlery, and flatwear, and cups to use for a basic meal of supermarket food. the shower and kitchenette are one room. the washer drier is a convenience as well.
i would definitely recommend shu's apartment for a pleasant stay in tokyo.