If you book Directly on the website of the Hotel Aida Marais, you will benefit from the lower rate on the internet.
Republique - Jacques Bonsergent
Gare du Nord Eurostar for London and Thalys for Brussels and Amsterdam
Getting from/to the hotel to/from the airport couldn't be simpler; there's a direct train in Gare du Nord that takes just 30 minutes to either Roissy Charles de Gaulle or Orly airports.
If you book Directly on the website of the Hotel Aida Marais, you will benefit from the lower rate on the internet.