I had this hotel in my mind in previous stays in Tokyo, so I decided to try it out. I enjoyed my stay very much. The hotel was quite modern, and my room was a little larger than other comparable rooms in other hotels I've stayed at in Japan (which there are plenty of them), so I thought it was a good value. Everything was clean, and each room had a separate wifi connection.
A note on transportation, Kayabacho is the closest station, about 3-4 mins to the entrance, 5-6mins to the train. Nihombashi station is a little over 10 minutes by comparison but some of the lines might be more convenient to getting to places like Shibuya without a transfer (via the Ginza line). Unfortunately my final night it rained heavily right when I got out of Nihombashi, so I went to Kayabacho instead but still got wet from large puddles. Just some things to keep in mind with weather and luggage, especially wehn deciding wether to drag luggage to Nihombashi to take Asakusa Line to go directly to the airports.
I overall recommend this hotel, as long as you're willing to be a little removed from the absolute city centers in exchange for a good value.