Ok we all know that hauntings happen in Henry's apartment, but am I the only one who hears knocking or random sounds in the apartment even when Eileen is not there or anyone else is in the hallway?

It could be little Walter (too little for u to see through the peephole, because when ure in Apartment world u can see Little Walter knocking Room 302. And Room 302 at the hall is only one that is clean and not in nightmarish like the rest of the apartments. Very creepy!