IMHO, Florida's Confiteria Richmond was the best. Great food, classy decor, career waiters, comfortable armchairs, good lighting, no music. The perfect place to go with friends, or a book, and spend three hours enjoying the experience.
Sadly, it closed its doors in 2011, and was turned into a cheap-looking sports equipment store. More's the pity.
It was one of my favorites. The restaurant part however was only in the last years. Before that it was a traditional confiteria. Waiters were professional, as you say, just as they are (were) in La Biela. I wonder what happened to all the beautiful furniture in the Richmond. By the way, the Richmond is mentioned in Graham Greene's novel The Honourary Consul, set in Argentina.