Note: This review applies to the off-season; we went on a beautiful, sunny, warm November day.
We had a disastrous stop at the Troia Resort. First, this resort encompasses nearly all of the upper part of the peninsula. We spent nearly 2 hours traversing every lane, beach, and sidewalk looking for check-in, as each building was indeed labeled "Tróia Residence - Apartamentos Turísticos", and each building that looked like a reception area was dark and locked. None of the ~10 people we encountered on the deserted peninsula could help us either. "Where is the Troia Residence?"--“It's everywhere!” Finally, we wandered into another hotel, the Aqualuz to see if they could help us find the reception of the Apartment Turisticos, and found that the Aqualuz actually WAS the proper place to check-in during the offseason. This information in advance would have save us the two hours of wandering of our only afternoon there!
Then, we discovered that the entire walking-distance part of the peninsula shuts down at 6pm. That is, the single restaurant, cafe, and even grocery store all close, leaving no options for dinner.
Realizing we would be trapped without food until morning, we packed up and simply abandoned our room, and took the ferry back that evening.
I will note that the beach is truly beautiful, and the "island" atmosphere must be quite different during high-season, in which I'm sure the restaurants and cafes remain open.