I am wondering the same thing. Are they friends or are they experimenting with being in front of the cameras, such as Isabel and Marcelo in the past? They might be friends, because they seem to have a common hobby, photography. This would not necessarily be a barrier, that they would move to Sofia and Roman apartment. The girls did not know each other very well, because they do not have a lot of talking to each other. Of the boys is hard to say, because this guest is so gassy that he's talking about even though the blank walls.
Then, there visited this other couple, both of whom were nervous about a lot and did not affect their friends. Demid showed them the paper with the photographs and the official-looking text. They were not long in the apartment.
tambien estubieron mirando por la ventana , como si desde alli se viera el apartamento de sofia/romana quizas sean ellos los nuevos , igual estan ahora mismo alli , solo alguien que entienda el ruso nos puede sacar de la duda , de que hablaban , lo que si no tengo duda es que los invitados de todas las casas tienen el visto bueno de RLF , de otra manera no podrian vivir alli , seguramente el contrato especifica claramente este apartado , y rlf no asume ninguna responsabilidad por derechos de imagen de los invitados , yo soy autonomo y mi contrato dice que no puedo dar mi trabajo a terceras personas ni siquiera llevar un ayudante pagado por mi .