Just wait and see then.
So, in my apartment building all the floors look the same and one time I went to the wrong floor and almost put my key in. One time a resident of the either the floor above or below came opened my door that I forgot to lock. I recognized him. probably pressed the above floor and got out of the elevator with someone else on my floor. Just absent minded.
So this guy probably forgot to lock his door, she got freaked out that the door was unlocked even without the key and then got into defense mode. At that point double checking the door number should have been the first instinct. But cops nowadays they basically are pit bulls.
Years ago I did a similar thing: Every floor of the apartment complex looked the same, I got on the wrong floor and entered the apartment just below me (the door was unlocked). But I immediately knew I was in the wrong place, e. g. The furniture was all wrong.
One person in the apartment saw me, a girl about 13 years old. The only reaction she made to me, stepping into her apartment, was a huge smile; which was perhaps the most disturbing thing about the whole incident.