Recommendation about time (bad experience)
After reading the experiences below and making similar onces about "35" sessions, I would like to double on the warning.
There is a number of girls around trying to turn 30 minutes into 35 (or 60 into 65) to earn another 50 Euros. While I and other don't mind extending the time for a girl who is nice, the rip off form of this has become common recently.
A clear sign for this is generally attempts for "upselling" followed by rushed service. Leave such a girl as quickly as possible. If you did fall for the trick complain to the personal even if you decide to pay. Eventually they will enforce discipline by kicking a girl or two.