This is a cute little studio, in an okay location for visiting the Acropolis and such, but it's on a very busy and noisy street. Cars come flying past at all hours of the night. I had expectations of sitting on the balcony in the evenings and gazing at the Acropolis, but the reality was less appealing. The balcony is one floor up from the street and is hanging a bit over it, so it's extremely noisy out there. The noise was not an issue for sleeping because they have some blinds that can cut out some of the noise, however.
The unit itself is very cute and well-maintained. The bed was comfortable, and I slept well. Yannis and Helene had lots of suggestions for things to do, but I was only there for two nights so didn't really have time for anything other than the tours I already had planned.
Taxis in Athens can be difficult. Many drivers claimed to not know the location of the unit, and I didn't know the name of the neighborhood, which might have been helpful. The neighborhood is not Plaka, which is what I thought at first and may have also led to the confusion.
For anyone visiting Greece for the first time, I recommend limiting time in Athens and then going elsewhere, like to Peloponnese. It's much less busy, but still with lots of ruins, and the people are laid back.