This is a business hotel and the 2nd time I am staying here. The 1st time was 2 years ago and I have to say that I saw vast improvement in the service and facilities. Now there is WIFI available in the entire hotel and the signal access is very strong and connectivity very fast.
It's very easy access from Haneda Airport ~ 24 minutes via train to Mita station and about a 3 min walk from the station to the hotel.
The hotel is very clean well maintained. The rooms are certainly not as large as some of the large chain hotels in Shinjuku area but more than adequate for business travellers.
The buffet breakfast has both Western and Japanese fare and is good value.
There is a free lounge on the 14th floor with free coffee/tea/biscuits and opens to a roof top garden.
There are also 2 large stations < 10 minutes walk Mita/Tamachi that will give you good access to anywhere in Tokyo you want to go. Very nice restaurants just behind the hotel so if you are too lazy to venture far for food, they are good options to try out.
With 10-15 minutes walk you can get to Zojoji, Tokyo Tower and Shibakoen.
It's a quiet hotel and perfect for business travellers.