Check-in with Oleg was a breeze - he arrived on point at the pre-agreed time and walked me through the apartment and gave me pointers in the neighborhood as well on places to go sightseeing. Any issue I had, Oleg was fast to respond and attentive.
The place is a freshly reconstructed building - modern, cozy and just like in the pictures - two balconies, two Air Conditioners, kitchen with utensils - a drip coffee machine and capsule coffee machine, cooking utensils, VERY comfy bed and shower with high-pressure hot water. My stay was great, and I can heartily recommend the apartments to the people who are looking for accommodation in the area.
If you're a light sleeper, you can hear kids from a nearby school on weekdays, so earplugs are nice to have if you are a light sleeper (although all the windows block out a lot of noise). Internet is 10 Mbit but very stable. The neighborhood might look a bit rough, but I didn't feel threatened for my second stay inside this area - just do your research and know what part of town you are getting into.
All in all - I am happy I discovered this place and heartily recommend for people seeking to stay in Athens for perfect price-to-performance ratio.