I have been there for attending to a conference and the location of the house is literally in the city center, house was so clear, the communication with Mary and her mother was great, they even picked me up from the airport when I arrived and gave me a ride while I was leaving. They expressed an incredible hospitality (not to mention many surprising offers in the fridge though I did not have a chance to drink them all) and furthermore as the Crete already resembles Turkey, I felt like I was in my home. I strongly suggest you to have a stay in there if you are giving a visit to Heraklion. Thank you Mary!