Check if the apartment is for sale
Often the owners don’t tell you the apartment they rent out is for sale. In this case, they’re ready to get rid of the renters as soon as they find a buyer.
Of course, you’ll be able to indicate a penalty for an early termination in the contract, and the owner will have to pay it. Nevertheless, a request to leave as soon as possible will hardly make you happy. So try to protect yourself from unpleasant surprises and rent a house that’s not for sale.