For my older relatives living in Spain, it's important to choose travel insurance based on their age and health, and
https://www.globelink.co.uk/policy-options/spain-travel-insurance.html
can be a good starting point for checking available policies. Some programs set specific age limits or offer special rates. It's also important to disclose any chronic illnesses or regularly taken medications in advance. Does age always significantly affect the cost of a policy?