Alexi's flat is much much larger than the photos suggest and very beautiful and clean. Below are some details to note:
* Many have mentioned the dark hallway. We arrived at 8:30 in the night and had no problem locating the switch for the light on the 2nd floor. Note the following - there is an elevator that takes only 2 people. Since we were 4, 2 of us would take the stairs up and down and at this time the passageways are dark and you are unable to find the switches - they may be on sensors but they certainly don't switch on. You're better off just waiting for the elevator to go back down and bring the next 2 up.
* The showers are great. There is a large tank to fill the hot water which takes 30 mins, but 4 people can easily shower without problems. Relatively to the other bnb's we used in Greece the shower stalls are huge. Alexi provided more than enough toilet paper, paper towels, shower necessities etc. It was great to have a washer, dryer and dishwasher in the apt. There was an air con in each room which was great since June had 90-100 F weather.
* Location. Perfect. We walked to all the markets, the Acropolis, and all our tour meeting points. The apt is in a central location and surounded by both good restaurants and inexpensive but quality slovaki places. We would definitely recommend Alexi's place for any family visiting Athens.