Wait - it's not just about the restrictions, it's mostly about the money! With 80k down payment on a T3 in Toulouse, you're gonna borrow like 150-200k, and interest rates in 2026 still aren't great, so your profit margins on Airbnb are gonna be tight compared to your borrowing costs! Even without all the administrative hassle around short-term rentals, the real problem is that your gross return depends heavily on the season and occupancy rate - if you end up with dead months you're gonna regret it fast.
Personally I'd say if you're just looking to do standard long-term rentals, it's more financially stable, but if you really want Airbnb, start by checking with Toulouse city hall how many days a year you're allowed to rent and whether you have to declare the property as your primary residence (because that changes everything!) - that's the real first step before you start dreaming about returns!