Hi @Sandra3736
You're right, that is a little awkward - I can see that guests might very well be looking forward to pool use, especially if there are children coming.
I would be inclined to message the guests before they came alerting them to the fact - explaining it was circumstances beyond your control ( you can hardly be blamed for a fire) and giving them the opportunity to cancel or at the very least a heads up. There's nothing worse thn feeling let down on arrival! Fro some bizarre reason the more I encourage a guest to cancel and go elsewhere the more determined they seem to be to want to stay! - it's a sort of a reverse psycology I think
If they make a big fuss and moan about how disappointed they are, I'd be inclined to tell them to cancel and airbnb will help them find another listing. I'm pretty sure airbnb would allow guests to cancel penalty free if an amenity is out of order at the last minute)
if however they seem to more or less take it in their stride adn don' t seem too worried, then as well as having them stay i'd personally try to organise something as a makeup ( rather than a refund - I personally dont' much care for the idea of refunds, it starts giving guests ideas adn expectations). Depending on the type of guest it could be wine or chocolates or a voucher to a movie, or a beachtowel for the beach for them to keep and remember their holiday by
I'm sure other more experienced hosts will have other imaginative ideas and sage advice....
Good luck!