Cover all of them with signs saying 'PERVERT' and 'PEEPING TOM' and 'DON'T YOU HAVE BETTER THINGS TO DO?' or her favorite 'LOOK WHO DOESN'T HAVE A LIFE'. She also would do this to any mirrors she came across, possibly making nice with people just to cover their mirrors.
What? It's a good deed, in her mind >.>
Lotte's not really spent ages imagining it, but she her idea is that he's an older person - mid-fifties, mildly graying, but good-looking in a Paul Newman kind of way.
You think she'd do better with the anonymous, faceless types. :/