A nice little place on the rooftop, good location, small but fine if you don't need much.
The big downside is the sewer gases coming up from the shower and sink drains (the sink has a stopper, but it doesn't quite seal always). A rubber bathmat over the drain helps, but it still isn't too pleasant. Closing the window is necessary with the street noise from a nearby artery, so that doesn't help.
Another thing to watch out for are the very steep metal steps to access the place (fine, but be aware if mobility is an issue).