Noe Valley will appreciate, or depreciate, at much the same rate of every other desirable and highly sought after San Francisco neighborhood. While I'm in the camp that says prices will keep going up.... I would advise against buying if you think you'll only be in the home a couple of years.
But, in my opinion, you'll be kicking yourself in 10 years if you don't buy today. But in 1 or 2 years??? You need about 7% appreciation just to break even after Selling costs.... and while 7% is not out of the question even for this year alone, I wouldn't advise you to buy unless you know you'll be there at least a few years.
So..... are you ready to make Noe your home for a while, and can you afford something today that you'll be happy with 5 to 10 years from now????
If so... now is the time to buy... April thru June is when you have the most options as a Buyer. Check out my site for various home search options, including an email property alert service.
Noe Valley is very desirable for a large demographic of young professionals anf families. The same things that draw you and are mentioned by my associates will continue to draw others. Simple demand and supply will cause the property values to continue to rise.
So to answer your question of what I think - I think it will still continue to appreciate. However, the next couple of years may not see as high of an appreciation rate as in the past several years.
Hope this helps and let me know if you'd like more statistical facts about this or other neighborhoods in SF.
Noe Valley has some of the best weather in the city and is a great family neighborhood.
Hope this helps!