I've been to the LV in Rome by the Spanish Steps. It has some lovely SAs, but the boutique is very small. That day I did not buy anything LV, but burberry instead. Weird, I know...I had been wanting a LV monogrammed speedy for so long, but I bought a burberry "speedy." WHen I did buy my first speedy, it still was not monogrammed. It is the damier speedy 25. So now, this year in the Fall, I will finally buy the mongram speedy either 25 or 30.
You should definitely check out the spanish steps for shopping. THey have so many designer shops. Also, while in Italy...Check out the designer Alviero Martini. You may have noticed purses with the maps on them. Those are very nice and hard to find in the states. Something new and different. Have fun on your trip! Let us know what store you decide to go to and what you decided to get!