My checkout time is 10am. If I can see the guest isn't making an effort to be out on time I ask if it's OK to take the towels and sheets for washing so I can start to prepare for the arriving guest at 1pm. I offer the guest space to leave their luggage and/or wait in the garden area if they need more time but I must start to clean the room in a few minutes. This usually gets them moving. I have found you can't be too lenient as the guest will take advantage of your kind nature and leave you in a desperate situation. Charging a late fee might work for some but when you don't have a room to spare that's not going to help the situation.
My checkout time is 10am. If I can see the guest isn't making an effort to be out on time I ask if it's OK to take the towels and sheets for washing so I can start to prepare for the arriving guest at 1pm. I offer the guest space to leave their luggage and/or wait in the garden area if they need more time but I must start to clean the room in a few minutes. This usually gets them moving. I have found you can't be too lenient as the guest will take advantage of your kind nature and leave you in a desperate situation. Charging a late fee might work for some but when you don't have a room to spare that's not going to help the situation.