Sokol is the best, very responsive and helpful.
The location of his flat is in walking distance to most of attractions, 10 min to Monastiraki where is close to Acropolis, 6min to Psyri and only 5 mins away from many good resraurants.
The neighbourhood might not look great but it's OK and I can say It's a safe area. Sokol's place is very peaceful especially the bedroom, very comfortable mattress, no backpain the next day. Quality linen and white towels. Also lockers to store your luggage if arrive early or late depart. All in all I had a great stay. Thanks Sokol