Spare Room or Airbnb?

Hi I am in the process of exiting letting homes as a Landlord. I have recently taken possession of one of my rentals and wish to sell. However, the sales market is slower than I anticipated.

I do not have a mortgage on the property and I wish to rent out a room rather than leave it empty.

I would be looking at renting a room for 3 or 4 months and then see if the sales market has picked up.

I have never rented out rooms before and would appreciate any advice.