I stayed at the Angkor Claremont for five nights a few weeks ago and I must say that it was a disappointing experience. The general facilities were reasonable and the location was suitable for me in the sense that although it was not walking distance from the Bar Street but at the same time it was very quiet.
The problem is the hotel staff. Like most Cambodians that I met, they were very friendly and pleasant people. However their level of English was way below the minimal level needed to work in a hotel for foreigners. Far below the level of guides and restaurant waiters (understandable), far below the level of tuk-tuk drivers (surprising). I would go as far as to say that the level was not even as good as those people working in street stalls (not acceptable).
Also if they do not understand then they should indicate that they do not understand, instead of saying "yes" or "no problem". At least then you would make alternative arrangements rather than being disappointed later. I should add the night staff was even worse.
Even in small town $10 guest houses in the far North, I got relaible hot water and room cleaned every day. However I regret that this was not the case for this hotel.