I stayed six nights here. the apartment is clean, modern, and relatively big *BY JAPAN STANDARDS*. There is actually a walk in closet that is much bigger than I've seen in other japanese studio apartments of this type. the bathroom is also large by Asia standards.
check in was easy and the bed was comfy.
the only nitpick I'd have is the location is lowkey far from Tokyo center. the apartment is in Nakano, a quieter district. to get to the "happening" areas like Shibuya/Ginza/roppongi/harajuku takes about 30 min commute and two train changes. not a big deal but I would have preferred something under 20 min commute.
pls understand this is just a minor nitpick and I should have done better research on location. I'd still rate my stay overall a 9/10.