What I intend to do is pop off to the local Noter (no legal advice required) and grant my son everlasting Power of Attorney to sell my property.
If I am unable to be around in Turkey to sell my property either because of ill health or lack of breathing, then he will be able to deal with the sale.
No wills, no legal advice, no officialdom.
I may, or may not, be around to let you know if it works out OK.