Welcome to CC@Bronte5
It's welcoming to see you been so upfront about your issues & admit to been naughty Australian's across the blue ocean been in trouble with a noise complaint!!
Do mention that you are truly contrite for having done that it if someone has complained to help right wrongdoings.
Ask the local the Host/ Local Authority to send you a copy of it because as you know Local authorities and those who don't understand the benefits of ABB tend to target those who are staying in ABB accommodation & conveniently overlook that those who live in other places also have noise complaints which needs to be aired more openly in the wider community.
In regards to the couch, do you have any before or after photos?
Make sure you take a copy of the listing if it's still in there for your own files.
It would pay to keep an eye on it to see if the chair is changed, or perhaps has been fixed.
Sometimes screws wriggle loose which can contribute to accidents occurring beyond anyone's control.
All the best & nice to see a Guest checking in to use CC & contribute.