BARCELONA, Spain (AP) — In Barcelona's residential Gràcia neighborhood known for its quaint squares, Txema Escorsa feels he is being left behind. The friendly faces of neighbors in his apartment building have been replaced by a non-stop flow of hard-partying foreigners, and his teacher's salary can't keep pace with the rising rent. "It is tough for me to imagine what to do next,” he told The Associated Press in the living room of his two-bedroom apartment.