The apartment was located within easy walking distance from the train station, and right in the heart of the city. We were to arrive in Zurich before the check-in time, and Linda was helpful in having a colleague meet us to let us in to the apartment and provide the door access card.
However, there were a couple of issues.
Firstly, the apartment in the photos is not the apartment you'll stay in. The actual apartment was OK, but it's never good to get something different from what you think you've paid for.
Secondly, we were not told that, in order to get in to the building (using the same access card as the apartment), you also have to press one of the buzzers at the same time. Having said that, Linda was quick to respond to my message and explain how to get in.
Third, the bathroom is accessed via a bedroom. Could be an issue for some.
To finish, I'd probably stay here again if I didn't find anything cheaper that was as centrally located.