My partner and I have one FFN which we'll be using in Tokyo. We'll be staying only the one night, (as part of a mileage run), and have not been to Tokyo before. We'd love to hear from folks who've experienced both the Park Hyatt Tokyo and Grand Hyatt on which they'd use again if they had only one night.

Also, we're wondering which one is easiest to get to, and how to you get there?

Thanks to anyone willing to offer your thoughts!