We stayed a Kamandhani Cottage for 4 nights at the end of our trip to Indonesia. The hotel is down a narrow sidestreet with a pretty awful driveway, but once you get there, the place is really nice - the pool in particular is fantastic.
The staff are good, although we found them a little unhelpful at times when trying to book taxis, but overall not too bad.
The room is really nice and clean, so long as you keep your shoes outside. The cleaners are good and keep it really clean too. The room is literally just a bed and bathroom, but it is comfortable enough, with great air-con.
Overall, I would recommend this place to a couple, maybe with children, I'm not sure what the facilities are like in that regard. Pleasant stay here.