Sofia, Plovdiv, Varna and Burgas serve different regions. An airport-labelled offer should still be checked for its terminal, meeting point and any shuttle transfer before booking.
Check current city access and parking restrictions for the allocated vehicle. For mountain and rural accommodation, ask about the actual road surface and access. A standard rental may exclude unpaved approaches even when they appear on navigation.
For a relaxed journey, choose fewer overnight bases and leave room for weather and unplanned stops. Store the accommodation’s permitted vehicle approach and parking instructions alongside the address; the shortest navigation route may not be the right way to arrive.