Rooms full of mosquitoes. There were many smears on the walls of dead mosquitoes, including many with blood, which housekeeping had not wiped off. Bedsheets looked old, blankets had holes and disgusting stains. Bathroom had mold, air conditioning did not work, and hallways were dark. Breakfast was extremely limited, and some of the items did not look fresh. On second night the hotel filled-up with a school excursion of adolescents. They had little if any adult supervision, and were extremely noisy, running in hallways (some in their underwear), and knocking on the door. There was no hot water in the bathroom until almost two hours after they went to dinner. We checked-out early and went to stay at another place.