Where: The entryway of a building in one of the prestigious neighborhoods of St. Petersburg, where most of the residential buildings were built in the early twentieth century. This building is the home of Lena and Marina from the clips "Over a Cup of Tea" and "Who Lived Here Before the Revolution?" (Tour 5).
What: Traces remain from an elegant and well-maintained lobby, described by Marina, a young resident of a communal apartment in the building discussed in the clip "Carpeting on the Staircase" (Tour 8).
In the distance on the left under the light you can see the door in the wall that Marina discusses: that's where the doorman sat.
In the foreground are advertisements on one of the inside doors; the other half of the door is seen in the background of this photo of the same entryway.