If I could, I would give this Eirini & Stefanos 6 out of 5 stars. This must have been one of the best stays I ever had in an AirBnB.
First, the apartment is extremely well equipped and well designed. I was there just for a night, but given the fully equipped kitchen, the washing machine, etc. a guest can easily stay in this place for 2 weeks without any external services, such as restaurants or cleaning services. So for people that don't want to eat all the time outside, this place has its virtues.
Second, the apartment is incredibly clean. The whole flat is extremely well maintained, everything looks brand new (it's almost new, the AirBnB exists for 2 years), which definitely helped us to be comfortable.
Finally, and most importantly, Eirini and Stefanos are incredible hosts. The communication was fast, Eirini welcomed us personally when we arrived. On the next day, we had to catch our ferry to Santorini, and Stefanos was so kind to offer us to drive us to the port (which is quite nearby).
The one point that wasn't absolutely perfect about this AirBnB is probably its location, however, the old city can be reached quickly by feet.
Overall, this was a perfect experience and if I am ever going to stay again in Iraklio, I am going to make sure it is at the place of Eirini and Stefanos.