Yes, really enjoying it, though with an uncomfortable underlying feeling of 'it could actually happen'. It's certainly curtailed my vague ambition to move to East Anglia. But the catastrophic trigger doesn't have to be rising sea levels, it could be a cyber attack, some form of weapons attack, social/economic/environmental breakdown... sorry to be a doomsayer but with the current state of things there are several scenarios we can envisage, and probably several 'black swans' we can't.
I really admire the way they've made the situation so normal and conceivable - depicting the terror and confusion of being torn out of the world you know, whether you're comfortably off or not, and finding yourself at the mercy of bureaucrats, strangers and employers in the lucky population.
Disaster and dystopia plots usually focus on the adventure of being on the road, the fight for survival, search for salvation etc. It's romantic life-and-death stuff, and love, family and community tend to win out in the end.
But in this drama, a likely outcome for those who find they can't support themselves when their property becomes worthless overnight (including, presumably, "families like ours" who watch foreign language dramas) is a tiny apartment in a decaying Bucharest tower block. And a family scattered across countries, with little possibility of travel.
I'm really enjoying (if that's the word) the hardworking imagination that's gone into this - examining how such an event might play out in reality, rather than falling back on the usual conventions of fiction.