Good location. Much too small for 5 people - it's a good size for one or two people, a third if a small child, but no more. The balcony is private only because it is surrounded by walls - the flat is on a low floor - there is zero view from the balcony (or from anywhere else in the flat). You have to strain to see the sky from the balcony.
Important things were missing from the apartment. For example, there were no tea towels for the kitchen (I had to insist on having one, after being told that I didn't need it given there was a dish drainer) and there were no sharp/cutting knives for food preparation.
I couldn't figure out how to use the washing machine. It appears intuitive to use but, in fact, is not. I asked the host for help but received no response.
The host is stingy and does not accept any critiques. When there was a problem checking in, he was fixated on insisting it wasn't his fault, rather than simply apologizing and letting me in. When I asked him for the things that were listed as being provided but, in fact, weren't there, he argued with me that I didn't need them, that he shouldn't have to provide them because they would be stolen, and that it was illegal to provide them. He begrudgingly counted out the rolls of toilet paper he was willing to give me. He didn't seem to understand that all he really needed to do was apologize that things were missing and give them to me. Then I would have forgotten all about it.
I've just looked back through other reviews of this flat. I see that most comment on the location, which is the best feature of this flat. I also see that another person who dared make negative comments got a highly defensive response. That is consistent with Konstantinos's defensiveness that I also experienced. He seems unable to simply acknowledge a problem and seek a solution without the need to assign blame.