I don't usually write longer reviews, but this time I couldn't resist :-)
Firstly the most important thing: Cosimo's house: If I ever build a beach house, it will be like Cosimo's. Very spacious, the huge terrace, outdoor shower, sea view - a dream. In the morning a coffee on the terrace with sea view or in the evening a drink - incredibly beautiful.
A point to mention is the road. It didn't bother us that much, but in high season all the traffic has to pass by there. Important to know when you want to stay there in July/August.
The interior is very functional, but that's all you need for a summer holiday. The air conditioning works perfectly, so it is nice and cool inside even on hot days. The only thing that is a bit undersized is the kitchen. All no problem if you go to restaurants. But if you want to cook yourself, you are a bit limited (only two hobs, no oven, no dishwasher, relatively little equipment).
The short walk to the beach is perfect. The water is Caribbean-like. We went swimming every morning and were most days on the beach. In high season it will probably be incredibly crowded. We only had crowded weekends, the other days it felt like a privat beach. If you want, you can go to Lido Silvana right next door in high season.
We were there from mid to late September and you have to know that it's already end of season there. This means empty beaches, but most of the restaurants and shops are also closed. Marina di Pulsano is almost deserted at this time. You always have to get in the car and drive a bit (e.g. to Pulsano). At the beginning, we had some problems finding good restaurants that were still open, but Casa Mita, La Barca, El Grillo saved us. :-)
All in all, we had a wonderful holiday.