Koichi was very responsive to my messages and he was really helpful. The check-in was smooth, the room was small (exactly as shown in the pictures), but efficient --it has everything you might need in a short trip: hangers, microwave, electric kettle, a sink, handsoap, toilet paper.
If you are sensitive about how comfortable your bed is, I would only recommend a short stay because the mattress and the pillow were not very comfortable. I wasn't expecting a very luxurious stay anyways, so I didn't consider this to be a big problem. The price is good for the value.
The bathroom and the toilet are shared with a couple of other rooms. Because of this, they were not as clean as the rooms.
The location is great.