A Daily Renting service, which involves up to eight hours of service, is mostly catered to tourists. However, it is great for exploring the surrounding areas in one day. The driver picks up the client and delivers them to every requested location, staying available to the client throughout the whole working day.
Anyway, if you plan to go beyond Romania to explore the city's surroundings, consider a tailor-made car tour of two or more days. In such cases, reserving a hotel room for the driver will be at your expense.