Tony huge made it a point to say 'leo died on bathroom door no way anyone could get in' . But then u see the bathroom window hmmmm
Bathroom doors here, if locked from the inside - can be opened with a screwdriver or coin from the outside. It's rare that they have key locks on bathroom doors - but you'd expect Tony to have the keys.
They have a push button or twist lock on the inside that can be locked while the door is open and then the door can be closed, leaving it locked.
The fact the door was locked doesn't mean a thing.