>>1259833Most sleeper trains have keycards for the door now, much like a hotel.
>>1259898The Intercités du Nuit is not in a great place. From what I understand, they're all trains from Gare d'Austerlitz to all the parts of France, and the only decent sleeper service in France is the Open Access Operator, Thello, which is a sleeper train from Gare de Lyon to Venice.
The third sleeper train, which is out of the price range of most people, is the RZD service from Gare de l'Est through Düsseldorf Hauptbahnhof, Berlin Hauptbahnhof, Warsaw, Minsk and then finally to Moscow Belorussky Station.
Not great, but at least you can get from Paris to Berlin overnight.
