Hajime's place is really nice and cosy, it is well furnished and has all you may need. We spent 1 week in 3 people and everything was just perfect: small kitchen, Japanese toilet and shower, a very comfortable bed (upstairs in the loft) and a large bed-sofa. The location is strategic: top 15mins walk to Shibuya and Ebisu, about 50mins away from Haneda airport (only 1 change needed using the public transportation). The walk to the subway stations is nice and allows you to see a bit of the residential part of Tokyo. Since the house is a bit off the main road, it is very quiet at night, no need of earplugs to sleep!
Hajime is very kind and considerate. We met Hajime and his wife for the check-in, they are extremely nice people and also gave us suggestions and where to go in Tokyo and surroundings.