Oswald was given an apartment while in the USSR when they were almost impossible to get for natives long waiting lists, bribes to be paid. It overlooked the river and had an excellent view.
Marina's uncle was a Colonel in the KGB.
Your being unaware of such uncontroversial facts leds me to believe you don't know a lot about this affair.
You know so many things that aren't true. The facts: he was a lumber industry expert in the MVD (Ministry of Interior) with a bureaucratic rank equivalent to colonel. The MVD at that time was analogous with the US departments of Justice and Interior combined and Marina's uncle administered lumbering projects using inmate labor. Oh yeah, her Uncle was some kind of bigshot in the KGB alright. It's where you conspiracy folks always stumble, seeing things where nothing exists.