Han-san's apartment was cozy and clean, though can be a little cramped for three adults so I would suggest that travelling groups with minimum three adults should considered booking the other apartments Han-san have such as 8F-01.
Located near two JR stations - Otsuka and Sugamo (I think it's spelt like that), which makes travelling convenient. Each station has so much to offer with bakeries, supermarkets, Uniqlo, bookstores. Also around the neighbourhood, there is a Family Mart 2-3mins away from the apartment. While going around the vicinity, we spotted Yoshinoya, Mos Burger, Domino Pizza, Mcdonalds etc. So much food!
I would highly recommend his apartment but again, just note that it could be a bit cramped for three adults, so look out for his other listings!