Except a little confusion around a booked car (model/type) and its availability everything was perfect.
Even this confusion was resolved professionally by the company representatives.
Worth to mention that it was not an easy task, since due to a bad booking experience with another rental company, I had only one day to arrange everything.
But, Sixt did a good job and when we arrived to the airport, it takes a moment and we were ready to go on a brand new VW Tiguan!
Car return also was pretty easy and comfortable.
Thanks Sixt for a good service!