Oh Lord, what a nightmare!! It's just the two directors that you work for, isn't it? Why on earth weren't you relocated onto the same floor? (I see that you broached the subject a couple of weeks ago.) Was that too sensible an option?
I love that they brought the filing all the way up to you when they probably passed the filing cabinets on the way ... how daft is that? And very frustrating for you.
Maybe once they've done that once or twice (or more) they might think about relocating you!
Never had to deal with that scenario before - I've always been lucky enough to work nearby (and within eye-sight of) my boss(es). I have had the visitors' refreshment problem to deal with though - and that was downstairs, also. Soon solved that problem when I managed to drop a tray of teacups on the stairs
I'd probably pay a visit twice a day - once in the morning and once mid-afternoon...