I agree with Delilah.
For me private, I've done both! I prefer having the flexibility to work my own hours, only see a small amount of clients and not deal with the burn out.
Establishment is awesome when your starting out but the long hours, amount of clients and the expectations I found hard.
I love being the one able to organise my own bookings and getting a feel of the client and following my gut, at an establishment I didn't have that control and would find the clientele I was attracting was not the clientele I wanted.
I would always got seriously anxious going to clients houses for outcalls and in more than one case there were other people in the house and party drugs it made me feel uncomfortable and vulnerable, now I can do my own checks and only go if I'm comfortable.
Do I hate brothels? Absolutely not I know girls who have worked in brothels for years they are great you have other girls to talk to, you don't do your own advertising, you can just arrive at your shift and not worry about a thing it just wasn't for me.