I've had a property in Europe for many years.
There are good bits, but I'll tell you the bad bits that I've experienced.
Finding a cleaner/housekeeper to do the changeover can be a problem. They can leave at a moment's notice - even a registered business can cease trading.
The rules & regulations about rentals are onerous, & compliance can be expensive, e.g. gas appliance inspections & other elf & safety checks.
Insurance is very high for rental properties; if it is not declared, the policy is invalid when the tenant causes damage, or leaves the door unlocked & goods are stolen.
Be prepared to replace furniture, saucepans, whatever, at frequent intervals.
The government charges Income Tax on notional rental income, regardless of whether any is received.
If you are in a community - which virtually all holiday properties will be - there will be annual maintenance charges for things like exterior painting, road & pool repairs, gardening, pool supervision. This can easily be £2000 p.a.
Regardless of the above, I've had many happy holidays there.
The final nail in the coffin was Brexit, & I'm selling it now.
The bureaucracy - and the cost - is breathtaking !