Ideal features are that the country
* is easy for a British citizen to rent somewhere to live in, on a scale of say 3 months, without, y’know, being at the mercy of the local “mafia”,
* isn’t quarantining British visitors,
* is easy for a British citizen who is renting somewhere and is without local employment to open a bank account,
* has a convertible currency and is easy to get money back out of once it’s been put in,
* etc. (please add to the list!)