I have to agree with Jeffrey regarding the makeup of The Sycamore HOA & difficulty in financing, if this is the condo unit you are considering. Do your research and get help from your REALTOR, review the condo docs thoroughly before you go through with a purchase.
I've lived in the area of S. 5th and Cardinal for over 5 years and have a personal investment property for the last 3 years a block from St. Edward's. We haven't been overly concerned or bothered by crime but it's something you should check out for yourself, echoing the advice of other respondents - drive by at various times of day, check out the websites mentioned, and talk to neighbors. Crime happens everywhere but you can do a lot to prevent becoming a victim (lighting, locking cars & doors, security systems, aware of surroundings, and getting to know your neighbors.)