Handoverdick ( not sure if that's where you come from or a dubious hobbie , but anyway) , the boys ( and now one girl) choose the apartment or hotel option depending on their own circumstance. Doesn't matter, we are all commuters and some like to spend some more time than others in hotel rooms. AJV , at the moment don't spend as much time in NRT as AJX and so more seem to like the hotel than the monthly expense of an apartment.
5 a/c would have more to do with AOC,s than reality. AJX uses about 5 or 6 of 18 ANA's 767's to do there flying on any given day and AJV about the same ( give or take).
Commuting from ASia/Pac is just easier. Same or close to same time zones although don't know why the hell it should matter to anyone else.
Hope this helps.