Your home has a lot of advantages in that area. You're priced below the market average both list price and price per square foot, you have one of the smaller homes in the area which is good for people that want to get into that neighborhood, the online pictures look great, you have an updated kitchen, and you back to greenspace. All in all, while things have slowed down a bit in Austin, you have a really nice house in a very good area. Being on the market for only 6 days, I wouldn't be too concerned at all at this point.
Having the list of upgrades that you've done since purchasing the home in '05 is great. Your agent also put both the survey and the disclosure online, and the virtual tour pics look great. I do have 3 small nits to recommend. Paint the front door and shutters a more neutral color, paint the wood on the outside of the hot tub something other than bright blue, and consider trashing the storage shed.
Otherwise, looks like a nice property! I do know your listing agent, she'll probably get a kick out of my nits above, but she might agree too!