PDB - Es Cavallet
There are buses that can get you to Es Cavallet. The bus stop is a San Jordi Cruz - a temporary bus stop until the road works are completed. However, if you go down to the car hire place on the way to the waterpark/space - you can hire a bike which will take you about 20 mins to cycle to Es cavellet. It gets cheaper the longer you hire. Alternatively, get a taxi there and walk back to the main road and catch the bus back. You can get off and on the bus outside the little supermacado C'an Tixedo - this shop does not close for siesta anymore so you can see about catching the 1600 bus and getting a cold drink from the shop first. I only found out last year that there are 2 buses at 1800, we always caught the 1700 bus because we were scared of not getting on the last bus (watch out for the german queue jumpers)
We found that for a 14 day stop the bike hire was better because it gave us more flexibility - we went shopping in Lidl and another little supermarket in Ibiza which saved us a small fortune out of out self catering budget. Fresh fruit for lunches on the beach was the best saving.
The road down from the airport roundabout to Cavellet is reasonably safe. We had no problems with traffic just a reluctance to pedal when it was hot. We actually got our journey time down to 15 mins by the end of the holiday. You can lock the bikes to the posts at the car park at Chiringuito's.
Have a good time, Es Cavellet is probably the best beach on the island but so few visitors take the opportunity to visit it.
Thorne