This was an amazing place to stay! The space was very modern in its furnishings, and very spacious. We were a group of 4, and the space was very comfortable and easily accommodated all of us. Very nice to have 2 separate bathrooms. The apartment itself is situated off a rough looking sidestreet. First time travelers to Athens, don't be scared! The neighborhood is amazing and awesome, we were initially worried but quickly settled into the Athens style. The apartment had a coffee maker and Nespresso machine for the morning, and dishes/cookware for those who'd like to stay in. There are games also provided in the apartment, we ended up playing a ton of "Pylos" which was really great in between the museums and restaurants when we were taking a break.
Would happily recommend this to anyone traveling to Athens. It was about a 5-10 minute walk from the Monastiraki metro station, a direct ride from the airport. It is up on the third floor (or 2nd, for Europeans). I believe there is an elevator, but we took the stairs. We were greeted by Nikos who was awesome and gave us plenty of recommendations for the area in terms of Restaurants and things to do. He was great with communication the whole time, and thoroughly explained the apartment for us. He also booked us airport transportation which was super helpful.
Overall, we had a great stay and I would recommend this place to anyone.