I had the wonderful experience of staying at the Grand Hyatt Bali (Nusa Dua) and the Hyatt Bali (Sanur) recently so would like to add a review/update.
I was a little scared of the Grand Hyatt because we don't like big/mega resorts, however, even though it has over 700 rooms and the place is huge, we loved it. The hotel was only half full as Bali is still struggling to rebound after the bombings. As a diamond, we were upgraded to an oceanview Regency Club room for one paid night and one on points. After a long plane trip (Singapore Raffles SFO-HKG-SIN-DPS) we were so relieved to check into a beautiful room with a great view of the breaking surf. We got a top floor room and never heard any noise from adjoining rooms. Here's a tip--at the airport they were handing out little books called the "Privilege Club" and it had info about hotels and restaurants and a special discount card. My partner shucked her copy and I browsed through it later that evening. The Privilege club offers a special at the Grand Hyatt--2 free massages at the Spa. I went down to the spa the next day to reserve our free massages thinking they would tell me--no it's not good at your rate, but it was true. We got 2 free massages in their outdoor spa area next to a waterfall, it was quite special. If you go to Bali, pick up this little book, we saved $90. The Regency Club was spectacular, great snacks and drinks while watching birds catch fish in the pond. The onsite restaurants are very good but you are stuck here in this resort area with nothing nearby.
After spending a great week at a dive resort in Wakatobi, we then checked in for 1 night at The Hyatt Bali Sanur. This Hyatt had its ups and downs. The first room they gave us was a "garden view" with a view of other balconies, had a moldy smell, and the room was quite dark and depressing. I called down and asked for another room hopefully an oceanview as requested. We had to wait until 6 pm for another room but it was worth it. The hotel was packed with stranded airline employees and passengers because all flights to Hong Kong were cancelled due to a typhoon. We finally got a room with a nice view and it didn't smell of mold, but it was small and dingy in comparison with the Grand Hyatt. The rooms are in need of a major update. The Regency Club was very nice, again overlooking a pond and had full bar for evening drinks and a great breakfast. Both Bali Hyatts serve free morning coffee & tea in your room. The main advantage of this Hyatt is that you can walk across the road from the entrance and find locally operated stores and restaurants.
In the future I would choose the Grand Hyatt as the Rooms and grounds are lovely and the beach & pool are much nicer. The Hyatt Sanur's beach was not that swimmable, it was very shallow as far as we walked. The service was outstanding at both Hyatts and it was very fun to experience the Bali Hyatts.