"Today, that single bitcoin is valued upwards of $2,200, Fortune noted in March."
That was the value in March.
A house sold for $350,000 or 82.55 Bitcoin means that the Bitcoin is valued $4,542.
It also means that if you wait a few months for a buyer to appear, you might find that a Bitcoin is no longer worth what you calculated initially, meaning you'll be out of pocket.
Personally, if I were to decide to sell a house, I would give a dollar value and indicate that Bitcoins were also accepted. That way, the amount would be calculated on the day of sale.
In any case, in France I don't think that such a move is possible. Selling a house means going to the notary to have it recorded, and they don't accept Bitcoins yet.