Following the recommendations on TripAdvisor for this activity was one of the best things we did during our 4-day stay in Cambodia in late March. You'll not only enjoy Dr Richner's cello playing but come away much better informed about the health and poverty of the country and some of the reasons for it, all in the space of around an hour. Take cash to donate to his projects - you'll want to. Dr Richner is truly an inspiration. One tip: take a jumper, the air con is fierce!