Wonderful apartment!! It's right in the middle of pedestrian streets. If you walk one way, you're right by the Agora and can see the Acropolis at night. If you walk another you can easily head toward Monastiraki. The streets did not feel unsafe at all at night.
The actual apartment was beautiful and they provided everything we needed for a stay. The bathroom was great, and very new looking. The hot water worked with no issues. I wish we could have stayed longer.