Bathrooms amd kitchens in FD's Russia

Hear me out. I am in the process of re-reading Crime and Punishment and often try to imagine the layout of apartments and rooms described in the book. From Raskolnikov's mini room with a sofa to the Marmeladovs sharing an apartment with other families... It is hard for me to understand if they had modern plumbing. The book mentions other people having to go through Marmeladov's room in order to reach their rooms. Is it assumed that they were sharing bathrooms somewhere? What about the kitchen for the family? I know that multiple times kitchens are mentioned in the book but they always seem to belong to the landladies. I would expect a family with kids to at least have a place to cook.