Definitely don’t marry number 1 because then you won’t get your hard earned tip.
Definitely evict number 3 because if she successfully sublet the room, then another hard working landlord might have gone hungry.
So by that logic, raise rent on 1, the tip is even bigger now! Marry number 2 by default and evict number 3 for trying to game free money out of the system, that’s my job!
Devils advocate:
If you’re known as a guy that loves Pokémon cards and people keep gifting you Weedle’s (one of the lowest powered and most common cards in the game), then after a while you’re going to be like “thanks guys, I know you want to gift me and to not just throw the card away, but these are worth literally nothing to me because I already have much nicer examples and I don’t need/want/have room for them, I’d just be throwing them away myself”.