We've stayed in the Mahogany Villa for one week in June, and everything was great!
The one-bedroom house is comfortable, with nice furniture and lots of space, toilet clean and with good shower, and the swimming pool just in front of it amazing. The guys working for the villa were very welcoming and always ready to help, and they prepared great food... served in a beautiful gazebo surrounded by flowers and jungle, both breakfasts and dinners were perfect! Lots of fresh fruits and vegetables, amazing Balinese soups, grilled fish and meat, noodles and rice, even good cocktails and countless bintang... making Italians happy with food is always difficult, and they made it :)
The villa is just besides a small traditional Balinese village of woodcarvers, friendly people, half an hour drive from Ubud (or more, depends on the traffic which is sometimes crazy in Bali)... from the parking it's 2 minutes walk down the hill, and entering the villa you also enter the jungle, all around you! And, if you want to be really alone in the nature, you can walk down through steps from the villa to a small platform. From there, you can hear the river at the bottom and all the noises of the jungle, really amazing place :)
The place is perfect to relax, with even a second gazebo for Balinese massages, which we loved (only 8 euros or so for more than an hour)... and there's plenty of activities to do from there too, either renting a car (driving in Bali is interesting!!) or with a driver... we did a lot, also with the help of the manager of the villa: rice terraces, ubud, climb of batur, many temples everywhere, the lakes in the north, and a traditional indu cerimony in the villa :)
Overall, we loved the stay here, far from the chaos of the touristic areas, surrounded by nature but with all the comforts & good food we could think of... definitely we'll come back if we get the chance!