You should be fine.
Not sure if this is in your budget, but we just had some friends arrive back in Bangkok from Siem Reap who stayed at the Golden Banana which they very highly recommended -- they've finished the pool nextdoor which you can use for free.
Otherwise there's stacks of places to stay and I can't imagine Siem Reap will be full.
Hope the trip is going well!
#2 somtam2000 has been a member since 21/1/2004. Location: Indonesia. Posts: 7,644
Send somtam2000 a private message Where has somtam2000 been? Website Twitter Facebook Flickr Google+ Instagram Pinterest