I just stayed a week at the "The Prince Park Tower Tokyo" hotel and I rate the hotel as excellent, especially at that room rate (paid in Euro). In comparison: Last year I stayed at the ANA Hotel which was more expensive, but did not offer the same quality.

The staff is very friendly and very helpful.
The room is well equipped and very clean (I had a basic room with twin beds on the 5th floor) and everything looked new. Free LAN, bathtub with bubbles, additional shower, large windows with view into a park and at the Tokyo Tower nearby.
Important for me: the curtains close perfectly and the hotel is extremely quite (no noise of any cars for example).
The breakfast room is on the 33rd floor and the view on Tokyo is amazing.

It is a perfect hotel for a business traveler and I hope to stay there again.

The only downsize: The location is not perfect, if you have a very busy schedule. It is a little bit off the centers (there are several centers in Tokyo), but in walking distance to two subway lines.
I presume you can't have everything or you would have to pay much more...

In Tokyo for a week-long conference at the adjacent Zojoji Temple. The lobby of the Prince Park Tower is elegant and understated architecturally. The staff was welcoming and helpful at every level. As a business traveler, I found the concierge particularly helpful, coordinating dinners and even ordering ahead for me. The on-site restaurants were good, albeit a bit pricey for the quality. The rooms were well-appointed and comfortable with large windows. Shibakoen, the adjoining park, is a beautiful sanctuary in which to walk and find cats (in rather unexpected places at time)...if you like cats. Tokyo Tower, one of the more recognizable features of the Tokyo skyline, is a short walk from the hotel lobby and subway stop is right across the street. I would definitely return for business or for fun.

This is a fantastic hotel. It really exceeded my expectations. The staff was wonderful and went out of their way to make us feel welcome. I didn't expect such service since I booked with Expedia. I highly recommend paying extra for a Premium room because the Sky Buffet Breakfast is outstanding and you get a complimentary bottle of Champagne every night. I love this hotel and I can't wait to go back. I have stayed in many hotels in this is my all-time favorite. The location is also very convenient.

The U.S. has a lot to learn when it comes to flawless customer service. The staff at Park Prince showed us just that. They pay attention to every little detail and everyone always has a smile on their face. They even have someone dressed in a japanese kimono to press the elevator button and bows until the door is closed. Wow.

The room was spacious and very clean. Nice bathroom and tub and separate toilet. One bad thing about the toilet is that you kind of get attached to it. How I wish we have heated toilet seats here with built-in bidet.

The hotel is easily accessible by Limousine Bus from Narita Airport. The cost was 3000 yen and they drop you off at the hotel. The Oedo subway line is a 2 minute walk.

What a great find!