Plans that fit your needs
Ask for a quieter setting for a meeting
Background noise can make it harder to follow a conversation. A short, matter-of-fact message that says what you need and offers an alternative makes it easier for an organizer to agree.
Reviewing your quiet meeting request
The draft should state what you need and offer one concrete alternative without explaining or speculating about reasons. If it sounds apologetic or hedged, ask for a plainer version. It shouldn't promise that a quiet room will fix anything, and it should say what you mean by "quieter" so the organizer doesn't have to guess. You don't need to include anything that reads like a medical disclosure.
Following up
Send the message early enough for the organizer to check room availability. If you hear nothing, a short follow-up the day before is reasonable. Once the room is confirmed, note its location so you're not looking for it on the day.