Mr Box, here's why you're wrong
You take girls from Russia, Poland and Ukraine. You fly them from their home towns and put them in a Barcelona apartment full of cameras for 30-90 days. You tell them they get paid bonuses for nudity, masturbation and sexy shows. There is nothing natural about this situation whatsoever, but still you want them to somehow 'be natural.' This IS a job for the girls - saying otherwise is deluded. The couple's apartments are different because they don't get paid - they just have a free place to live. These girls are here for a short time, they want to make some money and then they go back to their 'real' lives.
What you want does not exist. You cannot have the above situation and have people behave naturally. It will NEVER change so for christ's sake get over yourself. The Barca apartments are NOT part of the 'idea of the project.' They are entirely different, and clearly what they offer is not to your taste, so you will be much happier if you go elsewhere (and lord knows we'd all be much happier if you went elsewhere too.)
Still, I'm sure we all look forward to reading the same comments from you over and over and over and over and over again for the next 12 months