Masami helped me a lot when I try to book the place, I can tell she is really kind and helpful although I didn't have the chance to meet her in person. The apartment is very clean and tidy, good enough for 5 people like us. The place is easy to find, few mins walk from the subway station, only 2 stations away from Shinjuku. We also love the neighborhood, a lot of small local restaurants which is great, you can definitely experience the adorable Japanese culture here. Highly recommend the place, we really had a great time! Thanks Masami!