The property is located in Shinjuku area. From entrance/exit of Shinjuku-Sanchome station, it is less than 5 minutes walk, but it takes about 10 minutes total from train platform to the front of the property building.
There are multiple convenience stores and many other restaurants nearby. It is very convenient.
When I used hot water in the bathroom, it took some time to get to the desired temperature because it was either not hot enough or too hot.
There is tatami room which is a big plus for us. There is a bedroom. However, we did not sleep in the bedroom. We slept in the tatami room in futons because why not. We are in Japan. Mine as well try to live like locals.
The bedroom does not have any heater. This is not a problem to us, since all of us slept in the tatami room anyway.
The size of the apartment is comfortable for 3 people. It felt like home (Japanese home that is).
Xin is very responsive. Great host.
Overall, I would book this place again.