We were a group of 4 (2 adults, 1 teenager, 1 child - 9 yrs old) and the size of the place was just right for us given that we all have our own luggages. The place is listed for a maximum 7 guests though which I think is sort of cramming it in. The bathroom is really small. I’m 5’6” and even for my frame it’s really tiny. Taller guests might have an issue with this. The location is great. It’s just a short walk to the busier areas of Shinjuku. Plenty of convenience stores around to buy whatever you need. Overall a good base for exploring Tokyo.