Vacation rental, holiday rental, and holiday letting all refer to the same type of accommodation, which is a property that is rented out to travelers for short-term stays during their vacations or holidays.
However, there may be some regional differences in how these terms are used :
Vacation rental is commonly used in North America, while holiday rental and holiday letting are more commonly used in the UK and Australia.
Additionally, holiday letting may imply that the rental property is managed by a letting agency, while vacation rental and holiday rental may refer to properties that are managed by individual property owners.
Overall, the terms are largely interchangeable and the differences are mainly based on regional preferences and nuances.