We enjoyed our 31 days at Giota's apartment in upscale Kolonaki. The location was perfect for walking up Lycabettus and down to the shops/restaurants. It seemed to be an easy 20-30 minute walk to most of the sites in town.
The air conditioning gave instant relief and the deck upstairs was a great place to end the day. The apartment seemed more suited to shorter stays since there is no washing machine and microwave plus the bathroom was on the small side.