My family (2 teenagers, 3 adults) came to stay for 6 days. We chose Manati because we wanted about half the time to be relax/lounge at home time and about have the trip to be touring. Manati is nicely situated to get to much of the island that we wanted to see in 45-60 minutes.
The house was perfect for just staying put and enjoying the gorgeous scenery. We opened the doors and windows and listened to the waves and felt the breeze. The pictures are right on for the house and the view. There is a public beach a few minutes west of the house and a "private" beach a few minutes walk east. We went there and had the entire beautiful scene all to ourselves.
Our hosts were lovely. Met us at the rental car; made sure we got a full tour of the house; led us to a local restaurant for authentic food/experience and answered all our questions immediately.
We ended up needing to go to the hospital in Manati. Because you are really in the local area of PR (not touristy), many people speak only Spanish. The hospital though found us people to translate and were very helpful and friendly. I mention this because even though I didn't end up calling our host to help, I felt very comfortable that I COULD have done so and they would have done whatever we needed. Thankfully, it was a brief stay and worked out fine.
It is a perfect spot and perfect hosts and a great value. You will not regret this decision. Enjoy!!