not to be confused with Park Hotel (without "Royal"), which has a similar address (it's just across the road really) and is a similar hotel.
stayed here several times on business trips, for it's combination of location, quality, and price.
really good location in central Tokyo, for business or pleasure - walking distance to Ginza or to the fish market, really close to JR station Shimbashi, which is on the Yamanote line and on the lines going south to Yokohama and Kamakura.
as many hotels in this area, it shares the building with offices - the first 24 floors or so are office spaces, and the hotel starts at the 25th. there are separate entrances though, and the hotel elevators don't stop at the office floors, so you don't really notice it.
really good service - as always helpful and polite, but they really go the extra mile: on one occasion kept my luggage after checking out while i took a long weekend in Kyoto before leaving Japan!
would definitely return