Angela's place a very cute, much better than a hotel room. We changed our check in time like 5 times due to our tour, and Angela was very accomodating and understanding. Her place is really clean and close to many great places. To get to the acropolis you'd need to either walk 25 minutes or take the metro (5 mins). Even our check out at 4h30am was accomodated without a problem.
Highly recommended for a confortable stay in Athens.