I messaged Christian when I arrived at Zurich station and he promptly replied the direction to his apartment (as stated in confirmation).

The apartment is very well located centrally in Zurich. You can either walk from Zurich main station (Zurich HB) within 10 mins or take the tram (2-3 stops) from Zurich HB if you have Swiss/Zurich pass. The view from the window is as per listing - wonderful picturesque view of the Limmat river.

The apartments is clean and well maintained. Electrical appliances are in good working condition (TV/cable, WIFI, coffee machine with capsules provided, kettle, microwave, lights/lamps, room/ shower heater etc)

I would stay in this apartment again in Zurich next time.