Kofumi's place was exactly as advertised. It's perfect for 1-2 people and is super convenient in terms of location - just a few minutes walk to Okubo Station and just one station away from Shinjuku. My bf and I stayed there for 6 nights and wish we could stay longer! Kofumi and her husband were very helpful and responsive to our questions. Since we weren't sure how to get to the apartment from the subway station, Kofumi provided step by step directions with screenshot images. Her husband even helped us set up our pocket wifi when we arrived. The apartment is very cozy and quiet in the evenings so we had no problems trying to sleep, and there were coffee and tea packets, as well as bottled water in the fridge for us to drink. If you're looking for a clean, quiet place near Shinjuku area that isn't outrageously expensive then this is perfect!