The stay was lovely! The apartment is in the old town part of Chania near the old venetian harbor. It's actually just a few minutes walking distance to the old chania market and only approximately 15 minutes away from the bus station (which is needed to travel to other cities like Heraklion or Rethymno).
The apartment is also very clean and has a great view on a part of the sea/harbor. Konstantinos was also very nice and responded quickly to all of our messages.
We can definitely recommend this stay and would stay there again if we every visit Chania again.