http://www.puertodenoche.com/casa6/index.htm I found the link. I have written about this place previously so you could also do a search on this site. It is very plain from the outside and opens up into a gorgeous hacienda style house with a light and airy interior courtyard.
I stayed there with two of my kids and would return in a minute. We were there in early July so things were still quiet. My daughter spent one day golfing with Allan, the owner and they had a wonderful day. We did the Osbourne bodega tour which my kids are still laughing about. They gave our group 6 bottles to taste at the end of the tour and said if we needed more to let them know. There were only 6 adults on the tour!! My son wants to return for a new shirt because he has outgrown his, but we could not find time this summer to go. Allan and Penny treated us wonderfully and we loved our huge two bedroom area.
The beach north of town is exceptional, we took the little ferry to Cadiz, we took the train to Jerez one day and Sevilla another. It was 42º+ in Sevilla so we were happy to get back to El Puerto where there was a nice breeze. It is well located to visit lots of nearby places.