Being UK-based, most houses that normal people can afford, even if detached, are fairly close to the neighbours and don't generally have much mass in the walls, so "bedroom level" is going to be about 50-70dB unless you're lucky, insensitive, or hate your neighbours.
I mostly play in a garden room that has some noise suppression treatment, but it's still basically a prefab in an open space with neighbours within a few feet either side. According to the cheapo dB meter on the wall, I try to keep between 70 and 80dB when playing, and maybe push it up to 90 to 100 dB if recording in brief bursts (or if I know the neighbours aren't around). At 70-80 it's only going to annoy them if they're outside. Once you crack 100, if they're in the house with windows open they'll probably get pissed off (but we're British, so far too polite to say anything, thank fuck).
That said, in a 14' x 9' space, more than 90dB for a long time doesn't half mess up the hearing.