Yes and No, it really depends on the buyers. In this market buyer buyers are still kind of used to seeing "as is" on all of the REO and short sale listings out there.
Always call a local Realtor as Zillow has never seen the inside of the other comparable homes and has no idea of their true condition. Your home may be beautiful and full of upgrades, and the most recent sales that are included in Zillow are old, moldy, ugly, distressed properties. Always call a Realtor!