I stayed here for 8 days while visiting Athens. The room was super nice, modern and clean. Although you are not going to stay in your room a lot during your trip here it's nice to have a quality sleep and a nice room to get back to. The owner was so quick to respond (less than an hour on average!) and he did answer every question I asked. The staff is super friendly and they are there for your every need/questions and recommendations. The apartment building IS SAFE (front doors are key code (or card) protected and then there are a second doors before you enter the guest area. The apartment is also located close to the Monastiraki square (<2min walk), you are close to some awesome street and local food, there is market right across the street and a short 5 min walk takes you to the Central Municipal Athens Market which is a must see. There are also some good bars in the street a pizza spot that sells slices and whole pizzas for those late-night snacks, while you are out on the lovely terrace meeting fellow travelers that are staying in the building! Oh, also there is an amazing view of the Acropolis from the rooftop terrace (go upstairs early in the morning or in the evening, you will not be disappointed!).