I am confuse

When I was driving on my way home, I saw a complex of buildings on my left side. Actually, only one building with many apartments for rent. In front of the balcony, I saw a big green sign. “Our Residents Love Us”. What this sign does it means? Do they residents really love them? Maybe besides the check in the envelope they put a note that say “I love my apartment. I love the manager, too.” It is very confusing for me. I cannot figure it out what is the meaning of this big green sign, which is hanging out of the balcony of that building. Probably, those apartments are great place to live, or they are so bad that they need a good commercial to capture your attention.