I found a brilliant accomodation website which I used this year for Santa Eulalia. It's a Spanish site called Niumba, which is also in English. It had far more accomodation listed than I've ever seen on other sites. Might be worth trying. Worked for me!

Anyone got anymore recommendations ?

hi whiplash
try holiday rentals ibiza they have over 50 villa's you might find one there and then owners direct . hope this helps

i am planning a trip to ibiza with about 5 friends soon and was wondering if it is worth getting a villa, how much is the average villa, is there a massive step up in price from a hotel or not?, we are not looking for somewhere huge either, just enough to sleep six (floors and sofas fine)