It is very convinient place. The cloest station is JR Kamata, which is 8 minutes away. The station is between Tokyo and Kanagawa and it is almost easy for every place you want to go.
There are many types of restaurants with a wide range of prices. Honestly I ate too much cz it was so good.
Shopping is also great. Kamata station has a lot of shops, including Uniqulo and Muji, in house. There is also a shopping mall on the way to the house. There was a store saling winter clothes, where I found a mink coat selling at 20,000JPY while the original price was over half a million JPY. I did not buy it since it was way tooooo luxurious, but it was paiful to finally give up on such a glorious thing and realize you might never get a second chance to have such a thing.
The room was very clean. We even got umbrellas in the room! The only thing that can be improved is that we do want to have better kitChen utilities. Such as fry pan and kitchen kinfe. The things available were kind of too cheap. And we wanted to have a toast for breakfast. However, most of guests may never cook. It's not a big deal I recon.