Spain is a quite religious country as far as western Europe goes, and problems with church bells are rare. Most cities and towns I know have by-laws prohibiting noise over a certain amounts of dB during the night (typically 0:00 to 8:00 or so), churches just respect it and don't ring bells during that time. There have been cases of some churches insisting on ringing bells in the night, losing in court and being forced to stop.