life in Zaragoza

Hello, I'm new on here and don't know how it works much but I need to get some advice quickly! I've been offered a teaching job in Zaragoza and would like to hear some opinions on what it's like to live there. I've never been but it looks very beautiful from what I've seen. Is there a lot to do in terms of nightlife etc? I've just returned from a town in Mexico which was good but there wasn't a lot to do on that side of things. Any comments would be appreciated as they want an answer asap! Thank you