I own a duplex in Elmhurst and it honestly is pretty frustrating that every time the cable company comes out for a new resident they pay absolutely no attention to anything that's already been run and just plow right into making some new exterior holes that they don't properly seal and then run the 20th piece of sloppily-installed coax up the side of the building, just generally making the whole side of the house look like complete shit.

And then, inside, the real fun begins. Let's put some holes in 100-year-old oak baseboards. Let's ram that wire through plaster and crack it everywhere. Hey, maybe we'll just go right down through some hardwood floors!

Those cable installers are honestly the worst.

However, the landlord shouldn't leave their tenants high and dry. I fished coax and ethernet to most of the rooms in each unit and finished them off with wall plates.

Just to try to leave with a practical tip here, there were two ways I got cables to the second floor: 1) there was an old doorbell on the second floor and I was able to pull new wires up to that location from the basement along the path the doorbell wires had taken; 2) each unit has a small closet/pantry in the kitchen and I pulled some wires up though there to get to each floor. This is really common in old multi-families in Providence. You might have a similar situation.