Cleo's place is clean, new and safe. It is in the nicer parts of the city with friendly neighbours and is walkable distance from the metro. It is close to many attractions and recommendable restaurants, coffee shops etc. I stayed for conference and could get to the conference hall with a few minutes walk daily, even returning in between should I desire because it is so near to the conference hall and easily accessible. The place is also about 40min from airport via direct line on metro 3 which makes it a good base to travel further to other parts of greece if keen.
The rooftop is well maintained as in the photos. There are pretty plants which are swlf watered and the view is beautiful during the day, at night and nearing sunrise/sunset. You can even see some attractions from the rooftop. Room is well maintained and facilities are as stated. Cleo is a very responsive host and I even borrowed an umbrella from her when it rained for a short period during my stay. Highly recomnended!