Thanks a lot ! I saw that indeed there was a reduction for the 3 first guests, but I couldn't find the way to turn it off... oh well. I hope we can still make enough money to pay the rent this way too !
As for the length of stays, I think we don't mind longer ones. I tried turning off the instant booking setting, but there were like 10 warnings from airbnb, like "do you really wish to turn it off", or "your listings won't be displayed as much on the site" so I got scared and kept it on 😂 I think we'll be fine since we're only free until the end of August.
You're right, the app is very limited ! I'll be sure to use the website more.
Thank you for all your advice !