Places to live around Barcelona

Hi everyone. I'm living and working in Barcelona but living in the city is just not for me.

I'm looking for a place well connected to Barcelona center and airport. Up to 45m by public transport would be perfect.

Not too densely populated. Good vibes, safe and relaxed lifestyle. I like to be outdoors so easy access to mountain and sea would be great. A small expat community would be awesome...a place where most people have a minimum respect for others, common sense and a decent amount of civism would be very much appreciated.

In regards to services.. enough supermarkets, a farmers market would be nice. cinema a huge bonus as well as some nice cafes and beer bars but that's all extras. 

It sounds a lot but...it's worth asking.

So..What are the options?

Thanks a lot already 🙂