There are certainly areas you might want to avoid, but it really depends on your goals for purchasing. Some buildings are poorly run, have chronic budget problems, or very low owner occupancy. A local real estate expert will have guidance on a block by block, building by building level. Our office in Brighton Center is the top selling local office for about 5 years running, so we could certainly help guide you.
A lot of it depends on what type of investment property you seek. Some areas have higher concentrations of students while others appeal more to working professionals. If you'd like more details and guidance, I specialize in this area and would be happy to chat with you. My URL is below.