Maya's place is close by somewhere. I don't know exactly how far apart from one another they are but it's not far. Both Apartments are in Krasnoyarsk, Russia. The Population of Krasnoyarsk is over 1 Million so it's not a small place.
When Leora and Paul lived in the Old Apartment they were close by to Maya and Stepan and when they moved from the old Apartment to the current one the move never took that long to move their belongings from one spot to the other.