Yes!

Both are correct

Yes, it's true! People who rent out their apartments are called landlords (male or gender-neutral) or landladies (female). Alternative terms: * Property owner * Apartment owner * Rental owner * Housing provider (formal or legal contexts)

When I hear or use "landlord" I don't think of a noble-type of "lord". I just think of the word "owner". Anzhela, your English is great. абсолютно молодец!

The plural of "landlady" would be "landladies". The trend over the last few decades has been to do away with gender specific titles.