I had a reservation for a standard double room with Tokyo Tower view for 20,196 yen. But when I checked in, the front desk clerk told me that I had reserved a "city view" and he upsold me to a Tokyo Tower twin room for an extra charge of 2,000 yen. I didn't have my reservation with me, so I didn't realize he was cheating me until after I had checked out and reviewed my confirmation email. I asked about getting a late checkout (one hour) and he told me that it would be an additional 1,500 yen. I know that some hotels charge more for late checkout, but this felt like "nickel-and-diming" after I already paid an upcharge for the Tower-view room. The staff is not as good at speaking English as at other hotels I've stayed at in Japan. I had to ask several people about the special dinner price for hotel guests, even though they had printed cards in a holder right on the host's stand in front of the restaurant. The hotel location is okay - it's a trek from the Shimbashi Station (which is a pain if you're lugging suitcases), although you can take the monorail from Shimbashi to Shiodome. The breakfast is pricey at 2,600 yen per person. Earlier in my trip, I had stayed at a hotel in Shinjuku which offered a much better value.
The best part of the Park Hotel is that you can get a room with a terrific view of the Tokyo Tower (and Mt. Fuji on a clear day!), since the hotel takes up 10 floors (25-34) of a high-rise office building in Shimbashi. The rooms are clean and modern, and the wifi works well. The atrium in the middle of the hotel soars to all nine floors of the hotel, and has several restaurants on the lobby level. One of those restaurants, Hanasanshou, offers a "casual dinner" for a special price to hotel guests. It's not a lot cheaper (you'll save about 5000 yen), but it is a delicious 8-course kaiseki dinner with impeccable service. The hotel is not far from the Ginza and Tsukiji Fish Market, so you can walk to those attractions in about 15 minutes.