The type of life in Cambridge can really depend on what College you live in, but also what friends you choose to hang out with and what societies you choose to be part of. My experience has so far been very positive: the town is SO lovely, the people are bright and mostly very outgoing; the nightlife can be very enjoyable. Overall, the type of environment is very cosy, as you get to see familiar faces all around town; nonetheless, the town and community are big enough to make new experiences and meet new people every day.