@Krista165 About all you can do in a situation like this, that's totally out of your control, is talk to the guests, tell them that you'll totally understand if they want to cancel the rest of their booking, and that of course they will get a full refund for the days they didn't stay. If they decide to stay, offer them a substantial discount for the days/nights affected. If they're nice people, they'll understand that this was not anything you were informed about in advance and that there's nothing you can do about it, and also how badly you feel about it, so hopefully won't leave a bad review.
I assume there won't be any noise after normal working hours, so they'll still be able to get a good night's sleep? Maybe they'll choose to stay, and go out and about during the day to get away from the noise. Maybe suggest cool places for them to go for day trips or a picnic. If you live nearby and can spare the time and you like them, maybe even offer to take them on an excursion somewhere to get away from the din..