AOCA is such a nice, cozy & artsy place to stay in Tokyo, these were the things i enjoyed :
(+) place not far from Omori station
(+) a lot of places to eat, Milpa, Seven Eleven, Lawson, Family Mart
(+) very close to Mega Don Quijote
(+) check-in & security system is good
(+) very clean & cozy room, has a small balcony
(+) bathroom is kinda small but very clean
(+) kitchen, fridge & microwave
(+) the rooftop is cool
(+) host is very responsive
(-) it's very close to train railway, so it's a little bit noisy with the constantly "ding ding ding" sound, but don't worry, it's not very noticeable
(-) has a small issue with the bathroom drainage system, but the host fixed it right away
overall, i really love staying at AOCA & would definitely recommend this place to other fellow travellers
:)