Te apartment is spotless and bigger than expected. Lots of details. beautiful rooms. the self check-in was really useful as we arrived quite late at night so we didn't have to bother anyone or be worried about the time.
I looks far out the center but it's just a 15-20 min walk from Syntagma square and all flat, so we walked everywhere.
The only thing I would mention is that the shower is tricky as you have to heat it up in advance and if you are a group there won't be enough hot water for everyone (it was just enough for 3 in the morning if we were really fast) so I would advice some people to shower at night and some in the morning or wake up with enough time in advance to heat the water again). A part from that, all was perfect and I still give it a 5 star rate.