We stayed in Siem Reap for 11 days. We spent 5 days building a house with Volunteer Building Cambodia and we visited the area the rest of the time. We used Smart Tour Travel for all our tours (5 half days and 2 evenings).
Nareth is super efficient and reliable. She was very attentive to our needs and gave us tailored recommendations for each day.
We had 2 guides over the 11 days: Dany and Jackson. Both of them were fully fluent in English and were both very knowledgeable in the history of Siem Reap, the temples, the Buddhist religion, politics and major events that took place in Cambodia. They had an answer for each of our questions! I really liked the way they were making each visit interactive, with asking us questions and adapting the tour to our knowledge level.
Our driver Narong was very nice and attentive as well. He would always make sure we had enough water. He even gave us refreshing towels to recover from the heat after visiting the temples!
I would definitely reuse their services when we go back next year.