Hannover is one of the best universities in Germany. i definitely recommend it. But it also depends on what you want to learn. Because I had friends with different majors: civil engineering, economics, mechanical engineering. They all felt that the education they received was very good. I think we need to look at the big picture, including the city. He is one of the free and open cities, the perfect blend of culture and modernity.
The facilities offered (libraries, laboratories, professors, etc.) are undoubtedly excellent. Especially as an international student, you have many opportunities and opportunities to improve your skills.