Fortunately, Aquí no hay quien viva is a highly valued property, and there are legal ways to access it:
The cast reunited in 2021 for a special episode of "La que se avecina" , igniting hopes for a proper remaster. Currently, the available sources for are predominantly DVDRip (480p). The show was shot on 16mm film in the early 2000s, so a true 1080p or 4K remaster is technically possible but expensive. Aqui No Hay Quien Viva Descargar Mega