3. Hotel Costes
The Jacque Garcia-designed rooms of this iconic hotel are decked out in Pierre Frey fabrics, but Frey's favorite spot at the hotel? The cozy fireplace-warmed sitting room in the hotel restaurant, pictured, which Frey frequents. "I go there for lunch, then stay longer for meetings or interviews," says Frey. 

239-241 Rue Saint-Honoré, 75001