The practical advice is straightforward: pick a property you would want anyway, and let the permit be the second reason.
Getting a mortgage shifts the calculation in both directions. Overseas purchasers typically encounter stricter lending terms and higher rates than domestic buyers.
Forgetting about resale is a subtler error. A home bought abroad will one day be sold, and the pool of future buyers decides what you get back. A unit attractive only to a narrow group is harder to move when conditions change.
Leasing preserves flexibility. A job change, family reasons or a new visa rule can be absorbed with a lease termination, instead of a sale that takes months. In markets where prices move slowly, the ability to leave quickly has real value.