Booking.com - 8.7/10
Though personally I have never been; this is on my Bucket List (and I'm sure I'm not the only one)
Prices start from around £2000/villa for 7 Nights.
Hanging Gardens of Bali -
Overlooking the Ayung River, the luxurious Hanging Gardens Ubud offers villas with a private infinity-edged pool. Its 5 Star facilities include a spa, 3 dining options and free Internet. Featuring traditional Balinese Decor, the spacious villas also have a large terrace