Excellent location, however you must not be too sensible against noise, because there is quite a lot of traffic and many bars around. If you like historic buildings you will be impressed, since the building is from the mid 19th century. The room has a wonderful balcony and is light flooded.
Our hosts we very friendly and welcoming, giving us a little self made booklet about Athens and good places to eat etc.
Quite a few people were using the bathroom, but our hosts kept the bathroom clean during our stay which we appreciated a lot.
Everything was perfect, just from times to times a little too much smoking in the apartment.