Careful what you wish for. It's a good hotel, but if you're going to stay somewhere 50 times, I'd probably go elsewhere where staying 50 times means something more than a gift certificate for JPY 10,000 to use at the hotel.

Which begs the question: why did I stay 50 times at the GHT? To be clear, I stayed at the Andaz, the PHT, and the HR many times also. What they have in common is, of course, the brand, and the perks that come from staying at that brand many times: points, free nights, TSUs, free breakfasts, access to gyms and spas, etc. If the GHT wasn't a Hyatt, I probably would never stay there.