1. Severe wi-fi connectivity problems. My laptop couldn't recognise the flat's wi-fi network resulting in me being left without Internet for the whole duration of my stay. My laptop could recognise other wi-fi networks in the area but not the one of the studio apartment I was staying in. Kiriaki tried to be of help but to no avail.
2. Kiriaki took a picture of my identity card (both sides) using her cell phone. According to the General Data Protection Regulation (GDPR), I assume this is utterly illegal. She could have just asked for my ID number without the need to take a snapshot of my document itself.
Overall, the flat was okay but the experience was completely frustrating.