My wife and I and our two adult daughters were in Isla for the wedding of one of our dearest friend's daughter who is also very close with our two girls. We wanted a place where we could relax, view the Caribbean and not be too far away from the wedding festivities and Casa Perla fit the bill extremely well. The view was spectacular, the neighborhood was quiet (my wife and daughters heard the occasional dogs barking, but I did not, and I'm normally a light sleeper). They didn't keep anyone awake, however, and we truly enjoyed them overlooking the street between their house and CP. We even dubbed them our "security detail". Good local restaurants (Caribbean Garden, Cafe Mango, Rosa Sirena's are all very good), and 42 Coffee & Bistro has great coffee. We also found North Garden (in the northern part of the island) to be very good and reasonably priced as well.
The "book of everything" notebook in Casa Perla proved to be invaluable! My wife and I chose the bedroom with the ensuite bathroom, and the space in there is somewhat tight, and the bedroom doesn't have a closet but a wardrobe instead. Certainly not a deal breaker, just a word to be on the lookout to avoid a surprise.
Casa Perla was lovely and served our needs exceptionally well.