The good part is that Pestana South Beach is in a good location on a quiet street but near the ocean and main streets of South Beach. I also liked the staff personally and found them to be helpful. When I was there they would get a bit busy with larger groups of airline employees checking in, so that you needed to plan your questions around that.
As for the property itself it was just OK - it looks good from the outside and inside it is fairly average, with some of the cabinetry and things like that made out of cheaper materials. The bed was not super comfortable, and they use an unusual style of bedding and sheets. Overall, the place has a bit of a European vibe, which can be good and bad for a hotel.
It is nice that the beach chairs/umbrellas are included with the room, though you have to remember to ask for the card and the towel before leaving.
It is perhaps a hotel for couples and families, rather than for single people. As I said I liked the staff even if sometimes (maybe my imagination) they seemed a bit "watchful," good for security but perhaps more scrutiny coming and going than your average U.S. hotel.
They do have a pool in the inner courtyard which is not bad - though I did not spend a lot of time there.