I got back from a fantastic 11 day trip to Guatemala last night. I kept a daily blog while I was there that can be found at http://brennaabroad.com/
As of right now, it is all of the recent posts; Otherwise, you can select "Guatemala"under the Destinations drop-down.
I also wrote a quick trip report today summarizing it, which can be found under "Trip Reports".
We used Alfredo Garcia for driving transportation between the airport and Antigua, and the Lake and Antigua, and we used Avianca for flights to and from Flores. Alfredo was great, Avianca not so much.
We spent 2 nights in Flores and Tikal, 3 nights in Antigua (though split up so that we only had one full day there), and 5 nights at Lake Atitlan.
We never felt in danger, and everyone we met was friendly and helpful.
Logistics- ATM and phone counter are both at the airport before immigration, so we were able to get everything sorted right off the bat. We primarily relied on ATMs throughout the trip, using our credit card every now and then.
Let me know if you have any questions!

