I know these kinds of houses very well, they were all over Upper Montclair, New Jersey. Wonderful to see when they're preserved in good shape, and not "modernized". Not sure I would want one, and I don't do stairs now.
My first wife's family lived in something like these. But it had an extended roof that had a third floor for the servants, as many of those houses did. At least when it was built. By the 1970s live-in staff was increasingly rare. The really large homes had a separate house for the servants' quarters elsewhere on the grounds.
And one of the large rooms on that third floor consisted entirely of cabinets for the linen and towels. Along with a built-in ironing board to iron all these things. There was also a separate "kitchen stairs" that the servants used to access the other floors, rather than use the main stairway, which was for family & guests.
When some renovation was done on a parlor wall the original gas lines were revealed, for the gas lighting in the 1880s, pre-electricity. All the downstairs rooms had double pocket doors, so you could close off each space, or open them all to join to make a huge party or ball room. An interesting glimpse of how people lived 100 years ago. Or even longer ago in the US, since I saw similar homes when touring ante-bellum Southern plantation mansions.