I spent 6 days in Bali this past July and split my time between the Four Seasons Sayan in Ubud and the St. Regis in Nusa Dua. No drunken idiots at either place

At the Four Seasons we stayed in a one-bedroom villa and it was an incredible stay. The resort grounds are pristine and the staff offered top notch service. The staff all greeted us by name, asked how we enjoyed specific activities, and went out of their way to make sure we were enjoying our stay. It was an easy ride into Ubud to eat at the local restaurants where good food was very inexpensive (~$5-10 per meal). We also splurged one night by going to Mozaic which was much more expensive and in line with the pricing for a pre-fixe meal at a nice restaurant in Sydney. The food was great though and the atmosphere was really nice so I would recommend it for a nice night out. The FS also has a lot of fun activities that are complimentary like a hike through the river valley, bike ride through the rice paddies and local villages, and "gentle" yoga (was not gentle for a newbie like me). When we were done wearing ourselves out with the hiking and biking, we lounged by our private pool and read books while listening to the river. It was incredibly relaxing.

The St. Regis was also really nice and luxurious, but didn't have the same charm and sense of place that I loved about the Four Seasons. It felt more like a big resort that could have been anywhere. In short, I didn't really feel like I was in Bali. With that said the grounds were beautiful and hanging out on the beach loungers while reading a book and sipping champagne was also very relaxing. There are quite a few restaurants with tasty food to choose from at the resort and the bar has live jazz music most (every?) night. We chose to do the Sunday champagne brunch at Kayuputi, which was a little excessive IMO. The salt water lagoon that snakes through the property was the highlight for us. Very easy to pass some time floating around.

If I return to Bali, I would not hesitate to go back to Ubud generally or the FS specifically. As nice as the St. Regis was, I don't foresee myself going back. This is mainly to do with the seclusion of Nusa Dua. All you see are big resorts for miles and miss the charm of the local people, restaurants and art.