The place is really convenient since it is very close to Kanda station, where you can take both JR lines and Tokyo Subway lines.
The room was very clean and the size of the room was just nice for 1 guest. It looks like it's newly renovated.
Only problem is that its address in the information could not be recognized by my google map, thus it took some time to find it.
After sometime, I realized the host had send me a document describing the location, without which I could not find the place.
If you search the location of "餃子市場" which is a restaurant located in the 1st floor of the same building, you can reach the place with Google Map.