I don't think San Antonio is a villa area, more apartments and hotels really.

When I looked for a villa to rent in Ibiza, I didn't want San An but found there weren't that many really and what there were worked out expensive and were usually inland.

You might struggle to find a resonably priced sea side villa in Ibiza due to the rocky nature of the island and it's many coastal cliffs. Anywhere where there is a decent beach is surrounded by hotels and apartments.

However saying this, they do exist around San An. A quick search on Google produces quite a few websites offering villas, including IbizaVillas.com which seems to list quite a few around San An.

You may find it better in Ibiza Town though! Much nicer area and better night life!

www. ibizatravelshop.com have villas all over the island including some in San Antonio where we stayed last year! About 1500 euros a week in total I think and between 9 of us it came out very cheap. They also transferred us up there. Good Luck!