Rana homestay was one of the best experiences of our whole Indochina trip, and is close to perfect. We visited wiith our 3 children (13/11/9) all of whom rate it very highly.
The owners, Kheang (this is her village) and Don (American), have crafted a 2-day / 2-night experience which we found informative and moving. The homestay is on route 7, just out of Kampong Cham, from where we were picked up by their nominated tuk-tuk driver with no problems. The accommodation is very basic but adequate. The food, cooked by Kheang, is delicious. Sleeping is a bit of a challenge as rural life really does begin early!
However the highlights of the trip are the access to rural Cambodian life facilitated by Kheang. The first afteroon evening we walked around the nearby rice fields and village and then had an interesting conversation with her mother who, at 66, has seen and been through a lot in this turbulent country. The next day we went on a cycle ride to neighbouring villages where we met many locals with whom it was a privilege to share experiences. That evening the invited guest was a local high-school teacher and while this was depressing, in terms of poor resources and outcomes, it was fascinating.
The only blight on this otherwise excellent visit was Don's behaviour when he has had a few too many beers. He is much better company when sober.
Despite this I would recommend this homestay strongly if you want to see the 'real' Cambodia rather than the tourist trail.