You’ll have a better chance of getting it back to its owner by taking it back from where you took it. That’s where they’ll be looking, not here
maybe put up a sign with your phone number on if you’re not going to take it back
Why would families need car parking? It’s right near station and many bus routes. I can’t imagine landlords buying such properties to rent as HMOs there would be no profit in it and too much work to make them fulfil HMO regulations