We recently returned from a 14 day holiday with a group of 12 family members. We rented the whole property including the mobile home. Very well equipped accomodations, air conditioned and spacious. The private swimming pool is great if you don't want to go to the beach each day and safe for kids.
After having seen most of Spain and done with the crowdy tourist cities we experienced Chiclana de la Frontera as a great destination, authentic Spanish and very affordable.
The owners of the property Paul and Angela are great hosts and will help you find the unique Andalucian atmosphere you want. Although they live on the property also you will not be annoyed by them, consider them as your neighbours who look after your garden and pool!
Day trips to Cadiz and Seville are recommended as these cities are beautiful. Renting a car is also helpful if you want to explore the rest of the coast and maybe drive to Gibraltar to do some tax free shopping.
We were a group of 12 persons of mixed ages (5y to 72y) and we all loved and enjoyed it very much. We will definitely come back in the future.