Theo & Lena were great hosts and very communicative. Checkin was smooth and they helped us sort out a couple concerns right away when we moved in. We stayed there for two months and all the appliances worked great, the flat was clean and new, and an overall comfortable place to stay. There is a large grocery store within a two minute walk and the nearest metro is about 8-10 minutes, with plenty of bus stations nearby as well. A/C worked well too which is CRUCIAL in Athens in summer. The flat itself has a lot going for it!
The only downside is the neighborhood. The state of the area was quite poor and we regularly passed people doing hard drugs (shooting up and smoking crack pipes) on the street on the way to the nearest metro. We even had someone passed out on the apartment complex entrance door with his blowtorch and pipe in his hands and had to step over him to get inside. And that was during the day. At night we would only take taxis just to avoid anything untoward.