You seem to have ruled out Turkey, If you read reports on here it is not a safe place (generalization) for punting anyway.
Poland from my experience can be a difficult place (Krakow anyway) to punt. As been alluded to previously, in a lot of cases if the WG hears the sound of English they hang up immediately
Portugal is on the verge of being added to the Quarantine list, therefore, this could turn out to be a very expensive punting break if you have to quarantine on your return.
The problem at present is alot of European countries are on the UK Quarantine list and if not their clubs are closed.
Personally, If l was looking to get away, I'd head for Berlin, although Artemis is closed, there is still a vast selection of clubs, Independents to choose from plus it is a fantastic city.
From reports, Kiev would also be a good option but I'm not sure if airport departure location would be convenient.