Never stayed there but passed by and it is indeed a quiet place, three beatiful cabañas in front of the sea . If you want to forget about the city, that's the place.The food is really is great and they do serve dinner on the beach. Not that far form Rio San Juan (few miles). I went in the morning so i can't tell if there are mosquitoes.
For more info:
Los gringos, playa magante yagua.
www.losgringosdr.com
809 838 9838, 809 235 3784