Dean Rd. is in an area of lovely homes. The street itself acts as a through street for traffic at certain times of day because it connects between Washington Square with all its attractions and Route 9.
I like the neighborhood, and you will definitely get more for your money than some other neighborhoods in Brookline. But it's still a buyers market, and properties are not selling for at or above asking.
I hope this answers your question, feel free to shoot me an e-mail if you have any further questions.