Never stayed at Maruba but I drove past it a couple weeks ago on my way to Lamanai and I remember thinking, Wow, this is really out in the boonies for a nice place. We were in Belize for two weeks and found the mosquitos didn't necessarily depend on where you were but what the conditions of the day were. Take lots of spray, a good deet content. A windy day, you won't need it. A still, humid day you probably will expecially at dusk, dawn, and when you are in the jungle. They weren't bad but they were there.