I live in small town on NZ coast. Air is very clean. Mosquitos and neighbor's wood burners don't care. ERV is top 3 item in my house (other than induction cooktop and Japanese toilets).
- auto lid open and close
- heated seat
- water jet to clean buttocks with subsequent warm air blower
- relaxing music speaker (to drown out your defecating sounds and get you started)
just some ideas what some (public)/most (nice home) japanese toilets offer, which might be hard to come by anywhere else
Haven't heard of them from grand-designs and those kind of youtubers)