Even Nadia had entertaining parts to her time in the house, like being so outrageously desperate to be a woman that she showered in her stiletto's.
Kathreya is horrible. She got into the country because she married someone in his 50's, and now her 'fiancee' is a rich investment banker. We all know what Thai massage parlours also offer - she must be the worst prostitute in the world.
And Rex only has the house in the palm of his hand, because he's wealthy. Every other housemate in there would do ANYTHING for that 100k, and they think that if Rex is their friend, he'll give them money on the outside.