The good things are value for money. For this amount of money, one cannot expect much more than Nikoslaos was able to offer. The WiFi was fast and reliable. There is a kitchen including basic ingredients, and there is a washing machine, but I have not used either of them, so no idea about the value of that.
The less interesting things were the neighbourhood is not the fanciest part of Athens, but it suited me since I had to take the train and this is very close by. You could hear neighbours very well at night, but I think it is about how the building was constructed. I stayed for four days, and I got 2 towels, which is ok, but on the lower side. The bath was not clean. So, overall, I think this was a fair deal to stay there for this money. A nice guy, though, even if I only met him for 15' while checking in.