In response to a question about airport taxes. When I was in GUA a couple of months ago, I remember having a tax of about US$30 CASH(either US$ or GUA Quetzal) that I had to pay before checking in. This was in addition to any taxes charged in my ticket already. I was already running late (last person to check in), out of cash and the first ATM I went to didn't work(I believe there are only two in the airport so expect a line).
As to hotels in CCS, I remember a clean, safe hotel right on the beach that was only 15 minutes by bus(US$0.50 if that much). There were two restaurants basically connected to the hotel that overlooked the water. The hotel was about US$25. The beer there was cheap and pretty good. I will try to find the name and address of the hotel and another one in GUA and post it.