Thank you Chris for your very prompt response and making sure that myself and Wumi are well looked after. I didn't get to meet Chris in person but Wumi said he has been so hospitable.
Chris's place was the perfect distance to where we wanted to volunteer at and not so far from tourist attractions. The place was as it shows in the pictures and a good base for the night, and good value for money. The neighbourhood can be a bit shady at night time so just make sure to always have company with you when walking at night. Thanks for the pleasant stay in Athens, Chris!