Just arrived in Phnom Penh, after taking a Korean air 12 hour flight from LAX to Incheon airport, and Incheon to Phnom Penh.
The first thought is Phnom Penh looks a lot like Hanoi. People are incredibly friendly, and I recommend staying in a nice hotel.
The Phnom Penh airport is very nice, clean and modern, and was very easy to get through.
The local coffee is also very good!
The palace gate hotel is a good value. Also good to organize airport van pickup!
Also, looks like the Chinese influence here is strong. Lots of local Chinese newspapers and banks here.