If any of my friends were considering Heraklion for a holiday, I would instantly recommend them to stay at Nikos' apartment. The place itself is impeccable, a good size for a couple and has all the things you could ask for. The kitchen is well equipped, so that you can easily cook for yourself if you wish. The most amazing facility is the hot tub on the terrace which has a wonderful view of the mountains and water. Nikos is probably the best host I have ever experienced. He went above any expectations in making us feel welcome and comfortable. We also got great recommendations for restaurants and attractions in the area, which all turned out to be great.
The place feels closer to the city center than what it looks like on the map, we often walked home in the evening. There is also a really convenient free bus which has a stop just on the other side of the street, that goes into the center.
In conclusion, I would highly recommend the apartment itself and Nikos to anyone visiting Heraklion.