An aircraft according to the invention enables passengers to be received and comprises a first deck for receiving passengers, a second deck for receiving passengers, which is placed over the first deck, as well as at least one access door. The first deck has at least one first zone having a substantially planar floor and situated on the same level as the access door and at least one second zone having a floor offset in height relative to the first zone. The cabin further comprises at least one rectilinear ramp linking the first zone of the first deck to the second zone of the first deck, and at least one rectilinear ramp linking the first zone of the first deck to the second deck.