I actually never met Xenia or Valerian, but they were very flexible in meeting with my mom when her flight arrived late our first night there. The building is in a great location (walking distance from all of the major tourist sites), and we always felt very safe and welcome in the building and the neighborhood. There were tons of cute little restaurants and cafes right around the building. The apartment itself is a very big space with everything we needed. After showering in a tiny bathroom in Bosnia for two weeks prior to coming to Athens, I really enjoyed having the large bathroom and shower! Xenia and Valerian left us all the information we needed, and we never had any problems. I will definitely return here if I ever come back to Athens.