My boyfriend and I stayed at Serafeim's apartment for a week and it was perfect. We got on the X93 from the airport which takes you straight to the apartment, (where Serafeim kindly waited for us). The metro station was about 5 minutes walk away but since the weather was nice, we walked to the city centre everyday which took about 40-45 minutes - we didn't mind at all during the day but at night we took the metro back to the apartment as same areas are a bit ran down and dodgy. Apart from that it's a completely safe neighbourhood everyone we have come across are super nice and helpful. There are some shops nearby like a bakery, a cafe and a supermarket which we find very convenient and cheap! The apartment itself isn't massive but big enough for 2 people, clean and cosy with a comfy bed. If you have any questions Serafeim is always there to help. :)