I am actually suprised by the reviews here. I had a good experience at Marcellas. The atmosphere was serene and very upscale--which is nice during the hectic, at times frenetic engagement/wedding planning time.
Finding the dress was easy--they were having a trunk show, but went out of there way to pull out dresses that were not part of the show that they thought would be flattering. In the end I went with one from the trunk show. My sister was with me and we both found the sales person to be quite honest about which dresses didn't look good. Since my mom couldn't make it in to town (I had a failry short engagement of 7 months, so needed to order my dress quickly), they were very happy to have us come in again to try on the sample for her (after the order was already made). After ordering the dress the owner called me because she wasn't sure the size we ordered was correct for my measurements. I went back in and had the head seamstress measure me and confirm the size was correct. (This did take two tries as the owner missed my first re-measuring appt due to illness--which I found out once I arrived since she kept her own schedule and no one knew to call me).
My dress came in a month early!!! I was shocked and it was very comforting.
They also beautifully altered a veil from my sisters wedding--they added a blusher by moving the comb on the veil and finished the edges on the blusher to match the train. I found my jewelry and headpiece here as well (which both got a lot of complements at my wedding, people even assumed my earrings were real and an heirloom).
My only complaint was with the alterations. The first round was not great--not enough was done. The owner, however, instructed the seamstress how to make the necessary changes. After that for my next two appointments, I made sure the owner would be there too. They had to ship my dress for me to the wedding location and it arrived looking great. In the end the dress fit beautifully and I got many, many compliments. A spine did poke through the top of the dress (not noticible, but I could feel it), but not sure if that was Marcellas' or the dress maker's (Amsale) fault.
I enjoyed the tone of the store, even through its redecoration. Overall a very positive experience and I have recommended it to my friends, just be very clear and demanding on the alterations and you will feel good and look great.