In Russia you can find excellent accommodation but also horrible accommodation (more often, I think, than in other western countries).
Fortunately, the major online booking platforms include many reviews by other travelers that allow you to easily avoid choosing bad accommodation.
In this section I talk about:
1. The main types of accommodation in Russia and which ones I think are the most interesting for sightseeing on your own
2. Criteria to use when choosing and booking accommodation in Russia
3. The districts and areas I recommend for your booking