From study perspective it’s very comprehensive regardless you are pursuing natural, social (or any other) sciences. I was lucky enough to participate in great courses like astronomy or linguistics. Easy to find great tutors and the staff of the university is very supportive. Check the library which is one of the biggest in Hungary.
Community is also great, the city is built around the university. You can easily find good programs in sport and culture (including nightlife).
Life is quite affordable (depends on your wallet, certainly), cheap flats are available in big number. (worth to fix this before the semester starts)
Love the river and the buildings.