Gare d'Auber, which is the actual name of this business rather than Station Auber (English Translation) is one of the largest vaulted underground stations in the world, it is one of the few stations of its' kind to have step-free access in the whole of Paris (It is rare) and has two platforms on RER Line A.
I really didn't like this station, it was not only difficult to navigate with multiple entrances (Step-free access wasn't well signposted either) but the staff were also so unhelpful, after asking if there were lifts at another station and being told "Yes" I was able to purchase my ticket and as I went to the platform I was told that the lifts were out of order and I couldn't use my ticket... WHAT?
I then had to spend more time, all in all I must have been in the station for a good 15-20 minutes finding the right lifts (which were old and smelly - I used hand gel straight after exiting, it was that bad!) for them to re-issue the tickets, as they wouldn't refund me I was then given a new ticket which would allow me to go part-way from this station and then get the bus, they then lied saying I could use the tickets and if it wasn't for the bus driver's understanding or simply not causing enough bother to raise the fuss, I could have been refused travel and had to spend even more money.
Auber Station pretty much sums up how dismal the Paris public transportation system is. Dirty, old and pretty much doesn't save any time whatsoever. 1* read more