First of all, there’s a huge range of both luxury and economy rentals in Sliven. What you end up going with depends on your budget and what you plan to do. Specialty vehicles offer the best in mod cons and comfort. If you feel like splashing out, why not pick an SUV with all the bells and whistles, or perhaps a flashy mid-sized vehicle? On the other hand, if you just need something to zip around town in as cheaply as possible, go for a versatile compact vehicle (or something else that won’t blow your budget).