The place is amazing! It's close to many shops, café, restaurants, bars and just 10 min walk on metro. Buses are also close. Really great place to stay in Athens. Nikos is a really nice host and his place is well equipped! A bit of a trouble was the size of the shower. Nothing for a bigger people, it's really small. Also the hot water everyone is complaining about - it's really easy. We had no problems and we always had hot water. Overall I can recommend this place.
The only "big" problem we had - we had promised sooner check in. One of the reason we picked this place was the possibility of a sooner check in. But one day before our arrival we god a call that it won't be possible. We had to spend our night at the airport...on the other hand we could leave our bags the last day until 16. Which really helped us!