@Sepand0 I am adding my experience here.
We are hosts who use the August Smart Locks and have been very happy with them. I do feel getting the keypads is a must. The remote connectivity is very good (you do have to get the August Connect for remote accessibility but the system works without it.)
You do not have any monthly subscription to pay for, and one unexpected bonus has been that you can be notified when the lock is unlocked or locked. This really helps for determining if the guest has checked in or checked out.
Additionally, it can be programmed to lock itself after a time if the door is closed but the guest has not locked it.
Plus yes, the installation is very simple and involves no drilling. And you get to keep your existing deadbolt hardware (in case it is designed to match the doorknob).
Don't forget it (like others) automatically integrates with Airbnb, so guest access is automatically set up when the guest makes a confirmed booking, and the guest's virtual key is set up to start and stop at the appropriate day and time.