The Restaurant at Hotel Le Saint Gregoire
Hotel Le Saint Gregoire's restaurant is endorsed by travel writers. Of the 6 professionals that we tracked, 2 recommended the restaurant, including Concierge and Star Service.
Hotel Le Saint Gregoire 
Concierge
Star Service
Concierge "Oil paintings, framed mirrors, and Oriental accent rugs abet the impression of being a guest in the private house of some very refined Parisians, and the English-speaking manager is on hand for restaurant and shopping recommendations or information on the latest gallery shows"
Star Service "Set on a quiet street intersecting Rue de Vaugirard in the 6th arrondissement, on the other side of the Luxembourg Garden from the larger more enticing Le Clos Medicis and its slightly superior sibling Fontaines des Luxembourge, near the modest restaurants of Rue de Rennes and Rue de Vaugirard, this budget refuge has been providing value in a convenient location for a long, long time"
