This place is located in my favorite area of Tokyo. Koenji is quiet with a hippie vibe. Lots of thrift stores, coffee shops, snacks, etc. It has easy access to Shinjuku station via the Chuo Express so it's not far from the "exciting" areas. About a 10 minute trip from your front door to Shinjuku station via JR lines.
The apartment was clean. Nothing spectacular. Just a room and a bathroom. I just found it relatively cheap for Tokyo and wanted to be in Koenji. The walls are a bit thin but the noise levels are what I expect when I stay in Tokyo. Highly recommend if you need somewhere safe to stay for 1 or 2 people and you don't want to be in a hostel or shared apartment.