We stayed in this flat for 1 month and absolutely loved it. The flat it self is fairly basic but more than enough for 2 people. its bedroom and en suite were great and the open plan kitchen (which is well stocked) living room was lovely too. The photos don't really do the flat justice! The views out of the window were great, with the old town in view and a huge beautiful church. The locals are the nicest people we have ever met abroad.
The location is great, just a quick 10 minute walk into the town centre and around 20 to the beach. Sanlucar is also a brilliant town to use as a base for exploring the other towns/ cities in the region. We visited Jerez, cadiz, chipiona and Seville and would have done more if we had time- but Sanlucar was a great base to drive from.