I really like this Starbucks! It seems almost like a local coffee shop; it's cozy, they have a really small staff, and (at least when I go) it's usually not busy.
The service is always really friendly. I've seen some of the staff working at other Starbucks locations in Flagstaff, probably due to shift swaps and such. I come here to sit and do homework because it's pretty quiet and they have a ton of outlets!
The only disadvantages of this location are the hours (they close at 7 PM) and the temperature. Even in the summer, I have to bring a sweater if I plan on spending time in there. I understand the machines make it really hot for the workers, but the AC is so powerful in there that it's almost uncomfortable. Maybe it's their way of getting people to leave? Not sure.
Anyways, I like this location a lot. Definitely one of the best Starbucks I've gone to (which is... a lot).