I am 5'0", so I require a lot of alterations and it is essential that I have a good alteration service. I will never go anywhere other than Elegant Reflections for my tailoring services. I have had innumerable pairs of pants hemmed here and have been completely satisfied. They have nice private dressing rooms with real doors (I refuse to undress behind nothing more than a curtain), everyone on staff is competent and very friendly, the prices are reasonable, and they are almost always able to complete your alterations in less than a week.
I have only ever encountered one issue..when I had two pair of very thick trousers hemmed with a cuff at the bottom, the cuff seemed loose. Since I didn't want it to get caught on something and come apart, I took them back to be adjusted. The second alteration was done in just a couple days (in winter, which tends to be a busy busy time for them) and the new stitching was nearly indestructible!
The staff here also seems to have an exceptional memory, because even after a year hiatus- they greeted me by name!