Whenever we rent out our excess points we go through David's Vacation Club Rentals. They do a very professional job for both the owner and renter. Everything is very simple.
The room reservation will be in your name and you manage all of your tickets, dining, extras,
MDE, etc on your own just as if you rented the room directly from Disney.
DVC perks go to the contract owner and not the guest in the room so any perks (like the DVC lounges) that require you to show proof of your "Blue Card" or digital equivalent you would not be eligible for. You as a guest staying at a DVC deluxe resort would get to do the extended late night hours if they are available.