While it started out rocky, the Hibiya City Hotel redeemed itself very quickly. The first night I accidentally booked a smoking room and I didn't realize, so I was surprised when I walked in the room and no other rooms were available.
After night 1 I was moved into a non-smoking room for my second reservation which lasted 4 more days. The room was fresh, clean and larger than the original room I had, as expected. The hotel itself is a little warn when you look at things up close but overall it is well priced, clean, and the service is very good. Breakfast was a little lacking for a westerner however it was free and filled me up. Great coffee too.
I would definitely stay at this hotel as it is priced well, clean, and the hotel staff is eager to please. It is located close to Shimbashi station and right outside of the shimbashi area so lots of places to eat and drink after work.