We really enjoyed our stay at 'El casa de Mundo'. The location was ideal, literally a 5 minute walk to both the beach and the centre of town. Our children (8&6) also really enjoyed the lovely nearby park which has a great playground and is a great place to rest on a sunny day.
Although the amenities in the house are not modern, everything was fine and worked well and we loved the individuality and feel of the house- it really did feel like a home from home. Rosario also gave us some good restaurant recommendations in the town, and the map she has produced for guests is a great idea.