Slonysh is most likely Mafia, because a townsman would think before eliminating the city's main hope.
Added 6 minutes later
Why are there only 3 Mafia members left, especially if Neyra is the Geisha, as everyone believes, and the killer is the city's main hope? As far as I understand, it's currently in the killer's best interest to maintain a balance of power between the city and the Mafia, but right now, the Mafia is in a pretty bad position, so they will try to kill townsfolk. I suggest voting for Taco today, especially since we won't be able to vote for her anyway, and the Geisha is already gone...