Translation of cooler in Spanish

I would like to give you a proofreader's project. Proof reading sample sentences that were entered into the dictionary by our users. It is a very tough project and needs a lot of discipline and patience.
In South American we speak normal Spanish, but sometimes it sounds like music and not as you are used to it from the school books and video tutorials from the language schools that you have learned in Guatemala.
What problems did you have when you had to share your flat with your mates? Probably you were not used to it. We say that when we live close we usually discover many issues that were not known.