We spent 9 days there in February and loved every minute of it. The location, on the beach, is great. As it is a small hotel, 12 cabins I believe, it never felt crowded by the pool or in the central bar. If you want some peace and tranquility then I recommend it as an excellent choice.
The staff there were very helpful and as we had two young children we appreciated the extra attention they received - very different to the UK! The whole place has a laid back atmosphere and the tempo is leisurely. Our room was spacious with 2 good sized double beds and the shower was in a stone clad cubicle. I read a review about this arrangement being musty and damp but at the owner's recommendation we always left the fan on and it was not a problem.
The pool is a nice size and was where our kids spent most of the time when we had a day at the hotel. It does lack shade so it is probably a good idea to liberally apply a high factor sun cream. However, there are plenty of beach umbrellas and sun beds next to the pool. The beach is literally the other side of the dirt track that connects the hotel to the road to Parrita, about 7 km. The beach is deserted and quite simply makes for stunning views being lapped by palm trees. The only snag here is that due to the presence of rip currents it is not suitable for kids to swim in and possibly anyone other than a strong swimmer - that ruled me out.
The food I thought was basic but in my view prepared well and was always tasty. There are the old favourites such as pasta and burgers but I would recommend the fish dishes. The breakfast included in the room rate consisted of fresh fruit, eggs and bacon. Perhaps a little more variety would have been nice but we were there for 9 days so on a shorter trip perhaps that would not matter.
Lastly, one of the attractions of the Clandestino is that it is in an isolated location and a beautiful one at that but I would recommend hiring a car so that you can explore the local attractions.