Hi,
We have been on Terrazas for 3 years & have found that you need some sort of heating in the evenings in the winter months, & air con in the summer months. We have 3 unites one in each bedroom & one in the lounge, they are duel unites called inverters.
We also have mosquitos blinds fitted on all the windows & a door screen, as Richard has said this allows you to leave your windows & door open. We are not on the Las Isla blocks, I would imaging being surrounded by water you would have more problems with mosquitos. We got bitten quit a few times on our last visit just sitting on our back terrace & on the golf course.
If you need any info on who to contact for mosquito screens just P.M me.
Regards
Clieve