I think there is definitely room for improvement for the host to put further emphasis in her advertisement on the fact that the access to the room is through a 26 steps stair, and another 7 steps to the room inside the house. People who may have some difficulties in using stairs, may visualize the issue via a picture, as opposed to just include it in the descriptive. Pictures are the most utilized way for guests to have a reasonable and fairly comprehensive sense of the proposed accommodation - there should be some consistency on the key elements of the accommodation advertised between the descriptive and the pictures. This will help the transparency of the advertisement.
Further, it would pay off for the host to consider repainting the room and its components.