Nightlife - Birmingham has a brilliant scene for nightlife, for the more general super-clubs and pop music you have Broad Street with clubs like Gatecrasher, Walkabout, Risa and Bliss which cover a wide range of pop music, EDM and R 'n' B and Hip-Hop. There are also retro clubs such as Reflex and Pop World which specialize in 80's 90's and 00's chart cheese. There is also a scene for Indie music with nights at the O2 Academy and Snobs in the Horsefair area. Away from all that there is also a healthy rock scene around Hockley with Eddies on Livery Street and Uprawr on Hampton Street.
Crime - I'm sure you can check stats for this on a number of websites but speaking from personal experience i have lived in Birmingham for 22 years and have never been effected by crime anywhere in the area. Nor has it directly effect any of my friends. But obviously with any major city you have to be a little bit street smart and have a bit of common sense about you.
Diversity - Birmingham is massively diverse as a city as Aston is as a university. We have a number of societies for students wishing to connect with people of similar backgrounds and create a home away from home, to religious groups, cultural groups or even groups based on UK counties, you will find someone you can relate to here.
Industrial Links - Aston has fantastic industrial links with a number of multi-national companies. Such as IBM, Jaguar, Rolls Royce and Intel along with various partnerships with international universities.
Any more questions, don't hesitate to ask.
Josh