Akihiro's place was prefect for my party size of 5, we didn't spend too much time there as we were out most of the time. The kitchen was good for socializing as the bedroom spaces weren't as great, but that's to be expected from Japan in general. It's a 5 minute walk to the closest train station and 20 min from the main Shinagawa station so it was very assessable, lots of close convince stores, restaurants, drug stores, and grocery stores. If I have a large party I would stay here again.