Spain: the most consistent rental market
Spain has the deepest and most liquid short-term rental market of any Mediterranean country. The Costa del Sol, Costa Blanca, and Balearic Islands attract consistent year-round international demand. Barcelona and Madrid have strong urban rental markets. Rental regulations vary significantly by region and are changing in some areas, so local legal advice is essential before assuming any rental use.
The key advantage in Spain is season length and demand consistency. The most popular coastal areas attract visitors from April to October, and some urban markets sustain demand year-round.