Myself and 4 girlfriends had a fabulous stay at Anna's apartment. Details include:
Check In
Seamless. Although Anna was not there her friend Maria was to greet us in the apartment, walk us through the space and share any other details we needed to know. The apartment is easy to find and accessible with a small elevator if needed (it's on the 1st floor so we just walked up with our bags no problem)
Space
VERY clean and comfortable. It had everything that we needed and slept 5 very comfortably. Anna was nice enough to leave some breakfast food for us and the apartment i will equipped if you do want to cook.
It has a beautiful long balcony (note: no view, but still nice) and great AC.
Bathroom was clean with a few amenities, nice clean towels and a shower with fairly good pressure.
Location
Although not central it is definitely walkable.~10 minute easy walk to get right into the action. There are supermarkets and small shops around as well. There is a main road just two block away with a bus that can bring you downtown or up to The Palace of Knossos.
Note: The only thing is that a few cab drivers had a problem with the street name. We just found the closest intersection and used that and they were find.
Overall
I would recommend if you are travelling with a larger group. Definitely too much space for a couple. With our group though we could all sit around the dining table for breakfast or veg out on the big sectional couch easily. Although it isn't central it is walkable. The experience was added to by the generosity and availability of the hosts.