Sèvres porcelain, the grandest of ultimate luxury, artistic ceramics, was favored by European royalty, the aristocracy of the 19th century, and 20th century

Nestled in the picturesque Saint Cloud park outside Paris, the Sèvres factory is a temple to craftsmanship. Some of Europe’s most beautiful ceramics have been made here since 1740. Today, 120 potters use skills and techniques that have been handed down from generation to generation over three centuries

Open to the public in certain areas and a private visit can be arranged in the closed off areas.
The place to stay nearby is the very romantic Inn - Les Etanges de Corot in Ville d'Avray

This is my favorite place to get hidden from the hustle of Paris and enjoy long walks, great food and drink, a wine spa and just a beautiful retreat and yet only 15 minutes fromParis. 

Les Etanges de Corot Hotel -20 Minutes from Paris and yet 150 years back in time, but not lacking in today’s luxury

In the ville d’Avray is by no means in the deep countryside -- it is a prosperous-looking commuter town -- and the front door of the hotel is smack on the street. But this is deceptive: The place is built on a rise above the water, which in turn is populated by fish and ducks and is ringed by trees and walking paths. With extensive public woodland beyond, there's barely a hint of city life and certainly not a shred of evidence that you're so close to Paris. 

The public areas and ample guest rooms (with bucolic views) are tastefully decorated and very comfortable, with a wonderful touch of sophisticated whimsy: Corridors are hung with lithographs by Walton Ford; at first glance these look like excellent zoological watercolors or prints -- think Audubon -- but on closer examination they turn out to be fantastical, witty and sometimes macabre. On a rainy day, they'd afford hours of pleasure. 
Staff is unfailingly friendly, prompt and helpful. The hotel is operated by members of the Bordeaux-based family that owns the Smith Haut Lafitte vineyards and the Caudalie spa group –( Les Sources de Caudalie my favorite hotel in Bordeaux) , and sure enough there is a charming Caudalie spa one flight down, with calming treatment rooms and a big hydrotherapy pool (but remember: we're on a hill, so the lower level is light and airy, and there are pretty views out its windows). I like the fact that there is little new-age hocus-pocus about the spa, though a tiny dose of this is inevitable. No harm done, though: it's all relaxing and beneficial. 
There are two main restaurants and a bar, plus a café offering plenty of picturesque outdoor seating from April to October; I love the informal Café des Artistes, which offers a nice menu (two courses for €29/$40; three for €35/$48). the wine list is short but very good, drawing in part on the family's Bordeaux holdings, including the delicious Les Hauts de Smith white, which is I also love ( funny because I am not a white wine fan)