Hi there,
I went on a 4D3N tour to Siem Reap just in end Feb this yr. I thought it was good value for $ as there were only 2 of us and we had the tour guide and the mini van driver all to ourselves. Giantcanopy had a very good and informative thread on his Siem reap trip into details of his itinerary, and of 'cos his pics, so as ahbian, both under landscape/travel, also manda ....
Hm...if I'm not wrong. Cambodia has distinct Dry and Wet season: dry from end Nov- May, starts raining from June till Oct/Nov. So not sure if that's good for August. It was very hot by Feb when I was there. Best day was when we got up at 5 am to AWK, walked till 11..boey tahan already...went massage, lunch, napped...then started again at 4pm, when the weather cooled off. It was really really hot. I think when Manda was there it was raining quite a lot....will be diificult to walk around when it's wet.
Night live is in "town"..so if stay aroung the pub/club street near old market will be more interesting at night without paying extra for the transport.
AWK tickets expensive but worth at least 2 day visit (cheaper to get 2 day pass)....should and must visit morning, noon and night.....very different scene.
Hope it helps.
esther