I have always had good experiences using Airbnb - staying at Vera and Cleber's home was a GREAT experience. Always very accessible and answered questions promptly. Had great attention to detail in regards to amenities that would make my stay better and feel like home. I was in town for a conference at the Moscone center - quick 15 min walk. The area felt like a transitioning neighborhood in center parts and the street noise was there (did not bother me as long as windows were closed) - but I'll be honest, it is what you expect to be in a location so close to downtown. Would highly recommend for anyone coming to San Francisco!