The Intercontinental Paris is very nice as is the Le Grande Hotel near the Opera House. They are walking distance from one another.

Many fine high dollar hotels near the Place de Concorde (may have butchered that).

A quirky little hotel with good prices is the SAS Radisson on the backside of Charles de Gaulle airport. Free shuttle to the airport train station and then you can get to town.

Good luck. Please let us know which property you choose.