I feel like you guys would get better mileage out of going to the Facebook group for accepted students for both of these schools and asking around there. Just search for "(School) accepted class of 2017" (or whatever the graduating class is nowadays... yikes)
I went to sacred heart many years ago and currently work in fairfield. Fairfield is very safe. Sacred heart area does not have anything around. I also believe that I just read sacred heart most expensive school in area. Knowing the two areas I would pick Fairfield u. They are also located in towns next to each. S. heart is very close to mall in Trumbull.