Last fall, I purchased a large cargo bike from A Street Bike Named Desire and I have nothing but good things to say about the experience and the shop generally.
They were the only dealers in the region to carry the bike I wanted (the Christiania Bike or "Box Cycle"). They were knowledgeable about it, and it's respective advantages and disadvantages, and the one they sold me has functioned flawlessly since I made the purchase. So, in this sense, they offered everything I would want from a bike seller.
But they went above and beyond in several ways and made me feel like they were ready to work for my business. First, there was some confusion about my bike's appropriate list price and, though the confusion was not their fault, they came up with a solution to the quandary that was very fair. Second, they were quite responsive throughout the whole experience--they addressed me by name and paid attention to what I communicated. Finally, they were unstinting with their time on the phone and in the store. In fact, they let me haul one of their mechanics around in the bike in the parking lot, just so I could seewhat it was like to carry a person in the bike. That was fun.
I'm just glad that I live in Oakland and can't access the shop too easily: their selection of bikes is AMAZING and I could seriously spend every last dollar at their store if I didn't restrain myself! They specialize in bikes that people use in their daily lives--not racing or touring bikes--and have a great selection of folders, commuters,and cargo bikes, all displayed beautifully.
This is my favorite bike shop by a long shot. A great place.