Given a candle to move around
If you go to visit the caves I recommend the Marias hostel in semuc-champey. It's an ideal place, being very comfortable as well as giving you cheap discount for cave entrances, entrance costs you 40 quetchales. Opposite the guest house there's a river with a swing and it offers you fantastic views. The hostel has wifi but only from 12:00 to 14:00 and from 20:00 to 22:00 which is when the hostel has electricity. Other times you get given a candle to move around. An amazing place in the middle of the jungle that certainly will not disappoint.