Your apartment is way to small for long extended fostering.
Being in an apartment building sound travels big time. I'd put myself on a "emergerancy only list" for very temporary housing like 1-2 days tops.

Your landlord has been kind to allow the animals you have and didnt she say "one at a time" "no smelling like a kennel" when you told her about fostering. You take in more than 1 at time, her tune is going to change and then your out of a place to live.