well, everything was ok- that is a reasonable price for an apartment located 5 min from plasa Catalynia, but, it was not written in the post that the apartment is shared with other people in the rooms. I thought, that we will share the flat only with an owner.
there is a kitchen, which you can use to cook something, and a st. caterina market in 5 minutes from the apartment.
thank you, Chorch, for the hospitality!