Remember that the requirements for helo training are different; helo training must be carried out at an approved FTO. PPL fixed wing training can be caried out by a "Registered Facility" (RF) which is a less onerous requirement. Many FIs are RFs in their own right and operate freelance, as I do! A few weeks teaching in Spain sounds very attractive, try posting this on the Instructors forum and see what interest you get.
Happy landings
3 Point