As the host makes clear its up lots of wide steps. Cabin bag luggage fairly easy.
Top tip it is also high up in the old City. To nip up or down find just round the corner the Bibliotheque and use its 5 floor lift to go up and down.
Even easier at bottom of slope Bibliotheque is on nip into shopping centre and use their escalator to save more stepping up!
COOP just across road.