As already noted, and where they are so new, Airbnbs havn't always been strictly specified as a type of property requiring at least a D1 LD2 Fire Detection System. The rules are now quite clear - and for most standard properties, this consists of mains-powered, battery-backed detectors in all circulation areas (escape routes), and a heat detector in the kitchen(s).
For a standalone residential rental, you will likely require D1 detectors, fitted in locations as specified by category LD2. That is, mains powered and battery-backed (D1) detectors will be required in all circulation areas (escape routes), and a heat detector in the kitchen (LD2 specification). For an exact specification thats tailored to meet the needs of your exact property, we highly recommend having a Fire Risk Assessment (FRA) undertaken.
