The exceptional location of the Altona hotel is its main asset. A few minutes on foot, you can directly access the Gare du Nord and Gare de l’Est to take the Eurostar and the Thallys.
The Sacré-Coeur basilica in Montmartre and the Moulin Rouge are also within walking distance. The Barbès-Rochechouart metro station 120 meters from the Altona hotel, corresponding to lines 4 and 2 will give you direct access to the main sites and monuments of Paris:
In short, Paris is at your feet!
Metro: Gare du Nord (line 4 and 5), Barbes (line 4). RER B and D: Gare du Nord.