lol or just wired to the buildings lights!In the USA, such a generator backup system to a rental unit would be considered a very desirable feature, even if it does make some noise. I'm assuming that this, is in fact, a back-up unit (rather than a primary) and will be run rarely. I do wonder if the presence of big backup system like that is an indication that the utility power is very unreliable. If so, and it is runs frequently I might be concerned. First thing I would want to know is if that power does indeed power MY apartment and is included in the standard building fees or if there is an extra fee. (Or maybe its only wired to power the deluxe apartments on the top floor)!
i would ask for a test run up of the generator or the test schedule for the year.