We moved into our new home two weeks ago and had a problem with the delivery of one of our pieces of furniture because of the size of the staircase and of the elevator (lift).
I am therefore sending you the size, hoping that our order with you will be able to reach us properly:
Lift / Elevator: Height: 200 x depth: 110 x width of the doors: 80
Stairs: 200 height x 90 width
It is always the customers responsibility to ensure access is adequate, however, the low back design of the Chesterfield rarely causes problems with access (especially as the legs are removable).