I made two of those procedures to cede my properties to my two nieces. In one of them I specified the right to live in the propery until I pass away.
I did it thru a profesional with his office next to my home.
The only glitch in our current law is they can not sell the property during the next 10 years, just in case somebody makes an invalidating claim,etc.
I can not answer that, maybe you need to make an appointment with a pro.
I may suggest mine:
Escribanía Goicochea
Murguiondo 1526
CABA [email protected]
4686-1420 or
4880-8519