Is is difficult to open a studio in Vienna?

[mario]

The first and most important question: are you sure that your friends will be professional enough to not rip off the customers and let you in trouble?

Who can guarantee that??

Noone can. But if you are in the business for a long time, you will have a great knowledge of human nature and sex workers. If you open a new sex studio, first you have to obtain this knowledge. And until then, you will loose money and many customers.

Exactly. This is how businesses work. You should learn your lessons on your own expenses.