Rated this hotel as "excellent" simply because ratio of (experience there / fee) was quite high.
Metro Station Hanzomon on "Hanzomon line" (purple line)" is very close, within a 2-min walk. This is one of the nicest feature of this hotel. "Hanzomon line" has an access to major stations such as Otemachi and Shibuya. Oshiage is also a stop at the end, where a new landmark of Tokyo, "Tokyo Sky Tree", is there. Even if you are not very familiar to using Metro, having a cab is also an option and is likely to be affordable, as it costs no more than or around 1000JPY for Tokyo station, Akasaka, and Ginza.
I paid 10500JPY for a single room for one night, through a well-known hotel reservation website. It turned out to be more expensive than reserving a room directly through the hotel website. Worth trying.
At first I didn't expect much for my room considering the price, but soon I recognised that the view from the window was much much more than expected. You could see the Diet, the Supreme Court, the National Theatre, the Daiichi Seimei Building (used to be a General Head Quarter of US), and the Imperial Palace. Indeed, a top-down view of the Imperial Palace may not be easily expected in Tokyo expect for suite rooms up in the upper-end hotels. If you are interested in ensuring such a view, I do recommend what can be seen from the room you will reserve, since the building is round-shaped and what you can see varies.
The hotel is situated neighbouring to two monumental sites; the Supreme court and the National Theatre. The former was selected as one of "50 heritages of monumental architecture in Tokyo".
I recommend this hotel especially to tourists relatively new to Tokyo, who may have had a nightmare of being charged of exorbitant price at any hotel in Tokyo, who may be unfamiliar to using Metro, or who has never been in the Imperial Palace or been to see the Diet etc.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC