This mod automatically opens ALL the doors that I found in SCOs if they exist, so you haven't to press some key to do that.
Also, there's a functionality of restoring Niko's flat and Roman's taxi garage (for now it works only for restoration, but if it's needed, in the future release there'll be a destruction, too ):

Press F11 to restore Roman's taxi garage, if you are NOT near it.
Press F12 to restore Niko's first flat, so you can walk inside it free. I made it working even if you are already inside the flat.