回复：回复：Siem Reap is a pretty safe place. I had been there alone

 you can get the visa on arrival at Siem Reap airport. I spent 7 days in Siem Reap, staying in a guest house cost $10 per night. I booked it on Internet. You may go to wikitravel.org to see the hotels and guest housed recommened.Usually peope bought 3-day pass of Angkor Wat. But I bought 7-day pass. 3 day pass is enough.

I hired a tuk-tuk driver. I found his name on internet, too. $15 a day. Beng Melea $25. Bayon $25?  if you need, i can tell you his email address. He speak some English and can pick you up at airport.

Have a good trip.