As for the Inalto, it’s freezing up at the top corner of the unit and only drawing 30 watts.

Check the fan(s). That’s a common failure point on new fridges. I just scored a nice Kitchenaid side by side for free because it froze in one area of the fridge and got warm in another. $30 fan and it works like new.

Try scrubbing the walls with TSP (or most likely ‘TSP substitute’), you can find it at any paint or home improvement store. Then coat it with a good primer like KILZ to seal it all in. You can throw whatever cheap paint on top of the primer (grab a mistint from the paint store).

Save your receipts and anyone but a horrible landlord should let you deduct that from your rent.

I’m also living in the attic of a 120 year old house learning to fix stuff via youtube and This Old House reruns.