This hotel is excellently located - close to the metro, JR lines and the monorail to Haneda airport. When we arrived we received a warm and friendly welcome and the staff couldn't have done more to be helpful and friendly throughout our stay.
The room was spacious (for Tokyo!) and comfortable. We found the place spotlessly clean and the cleaning ladies took a shine to our young son which he found very pleasing!
If I had one negative it was that if you are traveling for business (as I often do) then the wifi in the rooms isn't really quick enough to work easily. If you are on holiday though, and just want to check your e-mails then it's fine. There is also free, quicker Internet in the lobby.
Overall I would return here the next time I travel to Tokyo with family.