The hotel is probably focused on business customers but that doesn't mean individual sightseeing tourists are not welcome. We had a fantastic stay there in a great location with a really nice and modern room. In comparison to the other places we stayed in Japan this was the best: decent room and bathroom size and a fantastic view over the Asakusa Temple. We could even see mount Fuji on the horizon (view my pics as a proof). :)
We loved that nice, modern, friendly and very clean place so much that we decided to stay an extra night.
If you would like to have the same view as we had... ask for the rooms on the 10th/top floor.
We paid 15,000 Yen for a standard twin room without breakfast.
Breakfast was 1050 Yen extra and that was really good value for money as it was a good mixed western and japanese style buffet.
If I ever have the chance to go back to Japan and Tokyo in particular I will definitely stay at the Blue Wave Inn again.