@O-D-0, because the cats don't live in the rental unit, it seems unnecessary to check off the 'cats live on this property' box.
However, some hypo-allergic guests might be sensitive even to the slightest hint of cat dander on an owner's clothing. Perhaps you could indicate in your space description that although you have cats, they live with you in the unit above the rental unit. That way, a possibly allergic guest can decide for her/himself what the risk might be.
I hope a more experienced host can advise you more specifically.