There are literally hundreds of language schools in Spain, so thousands of TEFL teachers have worked there and find themselves staying for some reason; probably not the pay, but the fantastic feel of the place along with the sights and wonderful food. People from the UK are often amazed how reasonable food and drink are around the country and so you should consider this when looking at a school’s salary. As with most of Europe, budget airlines allow you to fly cheaply around the continent.
https://youtu.be/eNDiVmAYYqY?si=rEyk6-4IoRPo03fe