I had a very pleasant stay. The apartment is well located (restaurants, train, cleaners, convenience stores... just a short walk away), clean and surprisingly quiet. It has all the amenities you'll need, and all appliances are in good working condition. Communication with Naomi was fast and smooth. Highly recommended if you're looking for a place in Shinjuku or, more generally, if you're visiting Tokyo (Shinjuku Station, which is close to the apartment, is well connected to the rest of the city).