We had 8 people, including 6 adults and 2 kids, but the space is big enough for us to sleep nice and comfortable. Location is good, it's close to JR station and supermarket, and there are some nice restaurants around here. The only problem would be that the house is next to train track, so you will hear the sound and feel the vibration when a train pass by. But after a long day visit in Tokyo, that won't bother your sleep. Overall, it's a good stay here, and worth revisiting.