Plaka penthouse was great! It has a quirky little elevator (in case you are afraid you have to climb!) and the apartment is exactly as advertised - better, actually because we didn't realize it had 2 bathrooms! It was spacious and comfortable and Alexandros is a very helpful and friendly host. Don't neglect the rooftop patio with it's amazing view. It is perfectly situated as it is down one of the quieter Plaka streets but right at the end of the street is all the bustle of this area. If you want to see the National garden and Hadrian's gate, they are right around the corner along with a hop-on hop-off stop. I highly recommend this place!