First and foremost, Cap sa Sal is an amazing facility at a superb location! Quite unlike anywhere we've been before. The complex has the grandeur of a 60s style luxury resort, it's like living in a museum.
The views are amazing, and the pool/waterside facilities as well. For such a unique setting it was surprisingly not overcrowded, there were always beds available and there were people but not massive. We loved that you can sunbathe on the rocks and then jump in and start snorkelling. Also the pool was spacious and neat, and the pool bar had everything we'd need during the day (and not expensive). The staff (pool bar, reception) were all very friendly and hospitable.
Parking on the premises is somewhat of an issue, but there was always space available just outside the gate. Overall we had expected a lot more logistical trouble in the area, given that we were here in August. But we were positively surprised by how well Begur and surroundings are organized; yes a lot of people, but nowhere near the feel of massive tourism you get in other parts of Spain. Also, a lot of people from Spain itself, which is a good sign. Begur is really authentic (as it advertises itself).
The appartment itself was fine, but we had expected a little more for the money we paid. The furniture is really old and it was not entirely clean (eg dirty glasses in the kitchen closet, dust/sand in a lot of corners). It was not that bad and we had a great week, but if we had to give any suggestion, we'd say the appartment is due for an upgrade. A real positive point is the amazing view, a minus is that it has no (real) balcony.
As for the surroundings, there are many great places and things to do, including snorkeling, diving, walking to Sa Tunga for beach/dinner, Aiguablava, Begur town, Calella de Palafrugell, the list is endless. At one point I walked from Aiguablava to Cap sa Sal via de officiel GR path (2 hours), one of the most beautiful hikes I ever did.
In short: we'll definitely be back!