Given that most management companies follow the 3 to 1 net salary to rent ratio as the minimum, you need to be making 7.5k after 1st/2nd pillar contributions which is like 8.6 gross. So you basically need a 3rd quartile or thereabouts salary to live in what is basically a "starter" apartment.
But on the other hand your tax bill is like a third of what you would pay in Zurich.