Cher and Billy's place was good for us for a one-night stay, very close to the centre of town. However, there were a few small downsides: it was a bit expensive (but isn't everything in Zurich), a broken window hinge in the flat meant that street noise kept us up a bit at night, and the area immediately outside the building entrance seems a bit sketchy (nearby strip club, and one of the only places with rubbish / glass / etc. on the pavement in central Zurich). The flat is also small -- only a double bed and a bathroom, really. I would recommend it for a solo traveller or a couple who are happy to accept those few small negatives for a clean, good-enough place right in the middle of downtown. It was perfect for our 18-hour layover in the city. We would stay here again, if they get the window fixed.