I had been in many guesthouse/hotel/capsule hotel/etc. in Tokyo and I can definitely say that this one is one of my favorite stay (and that’s why I came back). The house is located in a calm residential area with some typical Japanese restaurant around. It is not too far from a station or bus but you can also have a ride by bicycle to get to Tokyo dome or ikebukuro for roughly 10minutes, Akihabara 17min making this place well located.
Plus, the house is very clean, and the hosts are so nice. They make you feel like you are at home.
As for this room specifically, it does have many windows so it is very bright at daytime. Definitely worth a stay if you come by Tokyo!