Check laws in regard to this staement
If there is a problem with your rental unit that makes it uninhabitable and your landlord won't fix it in a timely fashion—or at all—you can make the repair yourself and subtract the cost from your rent. This process is known as “repair and deduct.”
The benefits of fixing a problem yourself are obvious: it reduces the amount of time you have to spend in a less-than-ideal living situation. The downside is that it’s more work for you—and if you don’t follow state laws closely, there’s a chance your landlord may try to evict you for not paying your rent in full.
If you can fix the problems. Just do it. I know that the landlord should do it, but he obviously doesn't care. Probably has a line up of uni students willing to take over her room.
Save it for a major problem if it arises
Not a landlord