I've never stayed at this hotel but the tariff, given the location, is very good.
7,400 yen for a single room and 12,000 yen for double. But rooms are small. 12 square meters for the former and 17 sq. m. for the latter. Breakfast included.
It's in the Ginza area with three subway stations within five minutes of walk.
Too bad the web site is in Japanese only.
http://www.presso-inn.com/
(another one in this presso-inn chain in Kanda is opening in June.)
I am not affiliated with them.