A very nice, clean apartment with a great location! Unfortunately we didn't get to enjoy it to its maximum, as we checked in late and checked out very early, but definitely a place to come back to when we're in Thessaloniki!
One thing to be wary of (if you intend to have a car with you) is that the parking can be quite hard to find in the area, as the apartment building is located on a hill. There is a public free parking nearby, but there were several cars which definitely had not been moved for several years. Keep in mind to communicate clearly to Daphni that you intend to come in by car, she can supposedly help out with finding something. There was a slight misunderstanding in our case about this and I got to circle quite a bit for parking, but was informed later on that she would have been able to help.
Overall, would definitely recommend Daphni's place!