Realtors are not able to give much information about specific neighborhoods and which are better due to Federal and State anti-steering laws
A good website is http://moveinmichigan.com which contains homes from 95 percent of real estate companies and community information.
You mentioned walking to things I assume you would like to enjoy some of Ann Arbors culture too.
We also have a number of events going on daily in the area that are free. Do you subscribe to the Ann Arbor Observer yet?
You could look on our company website http://www.reinhartrealors.com, also http://www.mlive.com
I hope this helps you.