It's a huge resort, you need to be more specific as to location for recommendations. A taxi from the airport will be around 23 Euros.

Travelrepublic do separate transfers.

https://www.travelrepublic.co.uk

Click on Transfers.

We are going to Tenerife this weekend and have booked our transfer to the hotel in Las Americas with http://www.suntransfers.com it cost 22 pounds.

Just back from Playa de las americas and the transfer with suntransfers.com was absolutely spot on, waiting at the airport for us with a lovely private Mercedes minibus and the same for the return from the hotel.

If anybody should wish a perhaps not the cheapest meal in Tenerife however it is certainly one of the nicest 'proper' Spanish restaurants to be found Meson Castellano is well worth visiting.

http://www.mesoncastellano.com/en/