although some hotels in the area have book exchanges, i have never found one in lloret.

however, there is a second hand bookshop which , sometimes, even offers to buy or exchange your books.

i have been using them for a few years.

website is here

http://www.buscobooks.com/

bookshop is near the santa rosa hotel in the main town. it did used to be behind the church in the main shopping centre, but has just moved.

now to be honest, he does not give you a great exchange rate on your books, and some of his prices are not always that cheap-he does this to make a living- but it does offer you the chance not to carry loads of books (weight) with you,and get a newish book(s) while you are there.

hope this is of use to someone.