Great location! Beware that the place is smaller than the pictures, as Tomomi accurately explains in the description. I was alone, and it was even small for just me, so don’t think it would be recommended for more than one person, unless you expect to eat and do everything else outside except sleeping. The WiFi was super fast and reliable, and the place was clean and quiet. Also the heater worked great, so wasn’t cold at all in the middle of January.
You are a 5 minute walk from Okubo station, and about 7 min walk from Shin-Okubo on the JR Yamanote line, so very well located in north Shinjuku. You can be at Haneda airport in less than an hour. Check in process was fast and very easy. All the instructions provided were very helpful. I would recommend maybe a small chair for seating? Since there was no place to sit in the apartment, but all in all it was great value for the price at 59 a night. Thank you so much! Hope to come back again.