Thanks for your great question.
I remember answering a previous question about prepping your home for sale. I hope you found my answer and those of my colleagues helpful.
Regarding your current questions it would be best to answer in a way that appeals to the widest market ... Most people are searching for homes that are bright & light, have usable outdoor space, surrounding a quality neigborhood shopping, great schools, convenient.... The immediate neighborhoods surrounding downtown MV might qualify to answer this question but I would recommend you look at the neighborhoods separately. They each serve different desires to people and thankfully (as well as hopefully) not everyone wants the same house.
You might also wish to ask the agent you choose to work with for the latest stats on active, contingent, pending & sold properties for Mill Valley. This type of report mapped will show you the current and even a historical desire for Mill Valley houses suggesting an answer to your question.
Want a report? Drop me an email at firstname.lastname@example.org, text or call me at 415-497-8864 .
Paragon Real Estate Group - CA DRE 01844627
Here is a website to help you get started identifying Mill Valley's many neighborhoods.
Feel free to contact me directly with any further questions.
Amy E Glaser