I remember going in 1997 and 1998. The Kuta-area place was nice stylistically and a "splurge" at $25, but the cottage in Ubud at $10 with the breakfast delivered to the porch was more memorable. Though honeymooners might find facilities like a mandi a bit sparse. Given the value possible at the lower and middle end, the price gap to stay at the top end doesn't seem justified. Went over to Nusa Dua to look around, but that area was just too insular and artificial.

Hawkers and touts can be annoyingly thick in Kuta and touristed places like Besakih (You still have to go). Ubud cultural shows are a must. Also got to Lovina (so-so), but I did like the black-sand beaches around Candi Dasa. They might be more built-up now.

Three weeks does seem like quite a bit for Bali. For some real adventure, get on one of the PELNI boats and head for Maluku and Papua!