I couldn't disagree more with this post. What truly saddens me is that you would go out of your way to slander this school and its employees.
I worked here for several summers in succession and found that advice and support was given to me in abundance. My employer was also generous enough to pick me up from the aiport when I arrived, drive me to the hostel she had found for me and pay for my first weeks' stay until a more permanent accomodation (which she herself had found) became available. When I moved into the flat, she personally introduced me to my flatmates/co-workers and I found them to be personable and friendly people. Neither complained once about their working conditions. Other (non-teaching) staff members were extremely open, spoke English surprisingly well and helped me aclimate myself to the difference in culture in Spain. An issue that may be the cause of some of your negative experiences.
I would also like to clear up the point about the contracts in Catalan. In Catalonia, by law, contracts must be written in Catalan, not Spanish.
As far as there being a lack of 'observations of your teaching', I personally prefer not to be 'observed' as it is distracting and, as a fully qualified teacher with years of experience, I would have considered that disrespectful.
I agree that the classrooms were big. But I found the space to be an asset, leaving room for floor activities and more creative/art-based teaching methods. Moreover, in my experiences teaching here, my employer was extremely open to my ideas and more active teaching methods.
Also, your mention of 'checking up' on missing, misused or damaged material/books seems to me to be a common situation in smaller schools. It may be the books aren't cheap or are no longer easy to get a hold of in Spain and they're therefore protective of them. I would be surprised not to be held accountable for losing, damaging or mistreating material belonging to any school, big or small.
Lastly, it may be helpful to point out that respect is not received where it is not given. I have no complaints about this school or its emplyees other than perhaps that I could not stay longer!