Probably the best Guesthouse is the "Terres Rouges", run by a former UNTAC staff. Hotel staff will pick you up at the airport.

It is a beautiful guesthouse with a number of rooms and bungalows, located near a lake in Banlung. The website is: http://www.ratanakiri-lodge.com

There are one or two other guesthouses, one of these is "Yaklom Hill Lodge", which is a bit tucked away in the forest, but very near the Yaklom Crater lake.

The " Tribal Hotel and Guesthouse". Newish hotel with wood floors and tribal decor. Fan and a/c rooms. www.geocities/tribal_hotel/Cambodia_hotel.html

The best information on Banlung or Ratanakiri is provided at: http://www.canbypublications.com/miscpages/banlungintro.htm