The room was a double room and it was small like most in Tokyo. It was very clean and the staff were so helpful and friendly. We left our luggage after checkout and the staff didn't have any problems just keeping them for us. Though we did see lockers and most ppl were using them.
The breakfast choice was sufficient. Sushi and rice in the morning was interesting and very Japanese. It was nice! The coffee was very strong which I liked, especially to wake up in the mornings!
The area around the hotel was busy, just one thing I would comment, is if only the hotel has a free shuttle service to Shinjuku, as it would make travelling to the airport more straight forward. Overall, the stay was very good and pleasant!