We loved staying at Niki's loft! It has everything you need to feel comfortable. The big balcony is perfect for breakfast in the sun or a glass of wine in the evening. AC is working perfectly (you'll need it^^), nothing in this loft seems old or overused. It is really really clean – I often hesitate to feel completely comfy on other peoples sofas or walking around barefoot but this place is so neat, you feel like home. From the living room you have this great view at the Akropolis but also watching the sunset on the balcony is amazing. Although it is in the middle of the city, it is so quiet (compared to Berlin), you can really enjoy sitting outside. We had lots of recommendations for restaurants and beaches or where to find the next supermarket, we felt very well prepared:)
Communication with Niki and Matina was no problem at all, there were always helpful and easy to reach. Def a big recommendation!