Diana Nelson has represented me in several transactions (2 sales and 2 purchases) over the past three years and I cannot express just what a pleasure she has been to work with, even through some of the more difficult portions of the negotiations. Diana is professional, calm, focused, and smart. She knows the San Francisco market very well, and impressed me with her knowledge of the various condo and co-op buildings downtown that we were considering. I will continue to work with Diana for all of my real estate needs. She is the best I have met.