We had a great time with the extremely-helpful Luciana and OASI. A few notes:
Apartments 1 and 2 are adjacent to each other. Number three stands alone and is parallel to the pool. Number four is on the second floor and offers the most privacy, as many have noted.
We enjoyed apartment three. We had everything we needed and the AC was strong, if needed. We took advantage of the bikes en route to the split (15 min) and the pier across the street. Note that the pier is the same shared by Wazeys if you are considering that location. Fantastic privacy and swimming.
We loved OASI and would not hesitate to book again.