I am going to Bali tomorrow and likely booking the Grand Hyatt for tomorrow any hour now, lol. I have a stay at the Hyatt Regency at the end of next week. So in theory, I could do both and compare both for you in a very recent, real world experience. Doing the suite upgrade probably at both. If you have specific questions or unique niche things you'd like me to look out for, holler.

P.S. Decent chance I also do the Hyatt Ubud as well, in between these two stays, if you're curious.

EDIT: Booked the Grand for 5 nights, then Alila Ubud for 3, then Regency for 3. In a "standard suite" for the second two. I am risking today's checkin to get a suite since it's literally, today, same day, and suites are showing...