So... I highly suspect Vivian is a perfectionist.
Firstly, before the trip, she shared all the modes of transport to her place, and helped us book a private car. Then she shared such a detailed description of how to access her place (even the number of times to turn the key!) and gave such a thorough list of recommended places and things to do before we even arrived. When we arrived at her place, it was spotless. At her place were VERY convenient printed lists of places to visit (including the entrance fees and combined tickets, if any) and instructions to use the public transport, which saved me a lot of googling. There was even a translated instruction on how to use the washing machine. There are other finer touches, like a coffee machine, to which she kindly restocked pods and milk before we came, essential oils, and bottles of water in the fridge prepared for us. There are also rather current magazines on travels in Athens available if you're into that.
Her apartment was simply beautiful, modern and I have to say, space efficient. Her bathrooms are VERY clean and I particularly enjoyed the huge comfy bed in the bedroom. The kitchen comes complete with all the amenities you need.
The location is about 15-20 minutes walking distance to the Acropolis Museum so we mostly walked to the attractions. To get to the Archaeological Museum or Mount Lycabettus which is further away, we used the taxi and it only cost around €5-€7 from her place (tip: use the Beat app for taxis). It's also a very quiet area since it's at the fringes of town.
Lastly, Vivian is such an amazing host. She replies to any queries in less than 5 minutes and was willing to help if you just asked. She helped us book the return trip to the airport on the last day.
Thanks for being such a great host, Vivian!