But, regardless of the number of bedrooms, your investment will only be as "good" as what you pay for the unit. Even if you buy a 1-bedroom, if you buy it for a great price, you're making a good investment.
Vinings is a great place to live but you're probably not going to see the real deals in Vinings that you can find in other parts of the city. Vinings is one part of Atlanta that's holding value.
Check out this story from the AJC: http://www.ajc.com/homefinder/content/homefinder/stories/200
Vinings is an exceptional place to live for singles and the name "Vinings" carries like gold!
You should be sure to get the assistance of a Rea Estate Agent to give you the guidance you will need to help you make the most intelligent decision when purchasing a condo.
If I can be of any assistance in that I live in the Smyrna Vinings area and specialize in Townhomes and condos I would be glad to help.
Best of luck in your home search.