Alam Santi the tops.
My wife, little daughter and I just spent a wonderful week at the Alam Santi in Ubud. Extremely well-done, beautiful place, with gracious service. Our room overlooked a rice paddy, had a huge veranda, dressing area, lovely four-poster bed, even an ornamental rock garden in the bath area. Hands down the loveliest accomodations we've stayed at (and we're pretty experienced travelers). Rates are very reasonable - I wouldn't think of going elsewhere.