I stayed at Manami’s place in June 2018. The apartment is between Koenji and Nakano station but a bit closer to Koenji (about 10-15 mins, with Nakano being about 15-20 mins). It is quite easy to get to, just walk straight down the road from either stations except Koenji will be down the main road and Nakano will be down a more residential road following along the train tracks. There are plenty of bars/restaurants around plus convenience stores (a Lawson right outside the apartment and Family Mart/7-11 on the way from Koenji). The layout is nice with separate bathroom/toilet but please be aware that the bed is up a ladder in a small loft-like area with not a lot of headspace. The walls are a little thin so you can hear the upstairs neighbours when they walk around or take a shower (think their shower is right above the bed space so is a bit weird when you hear running water while trying to sleep). Manami left a lot of little notes everywhere which was a nice touch and she even lent me her pocket WiFi. She also helped me book Studio Ghibli tickets which was great as the museum is only a couple of stops from the apartment. Also Nakano Broadway is pretty close which is worth a visit if you are into old anime toys and manga. Overall I had a great time and would recommend.