It is a clean and very spacious apartment. The location is perfect! It really can't get better than that. All tourist sites are within walking distance. All train, tram and bus stops are less than 5 min away, so getting anywhere else is very easy too. It's in a very lively neighbourhood and if you are a party person, then you don't have to go far either.
Konstantinos is very prompt in responding to all messages, you won't have to wait more than 2 min ever, whatever the time of the day.
I would highly recommend this place!
P.S.: the bed is quite squeaky but I'm sure that would be taken care of in due course.