If you hadn't caught this character when I was doing prework on A&H club, here's her character sheet now. There's a few things that are incorrect--I think the proper way of writing the surname is with a lowercase "van der", and I'm not actually certain she's a landlord per se (more of a building manager? Or something) but in any case, here she is
Link
Occoris
the Landlord is the person who actually owns the building. a Property manager is usually a third party company that manages a lot of buildings, but in general refers to anyone not on-site that handles a property (either for the owner or who is the owner) and an On-Site or Building Manager usually works for the property manager and handles maintenance and sometimes rent.