Nakano is such a fun area with so many delicious places to eat. Having a clean place so near the station is brilliant. Syuka is a great host and has a room upstairs that she uses periodically (which can be useful if an emergency should arise). She gave excellent directions, communicated openly, and provided a clean, cozy space to stay in Nakano.
Be careful of the mosquitoes at the entrance if it has just rained. They are mean.