This guide proved to be a very useful companion during our trip to Guatemala in August 2006, and was very strong on hotels (we found some amazing places around lake Atitlan)and eating options.The maps were great and bus and shuttle connections useful and generally accurate. Check out the photo section for a good introduction to Guatemala - a wonderful country, allowing us to pick and choose from the highlights suggested.
Tikal was very well covered, with tons of historical info. In fact that is the real strength of this guide - very complete coverage of Guatemala's Maya sites.