It really is a room with a view and you will love that rooftop terrace and view of the city! From the Acropolis to the sea (on clear days) and amazing sunsets, that rooftop is the best reason to stay here!
The room itself is modern and well designed, the kitchen is small but has everything you might need in terms of pots and cutlery etc, but you will need to bring everything else (as in salt, pepper, oil, tea etc.).
The studio is on the top floor, without any neighbours, so you will only have the typical street noise and occasional food smell from neighbours further down. It really feels like you are all alone up there, which is a very nice feature in a city where the walls to the neighbours are usually pretty thin.
It also means that it can get pretty warm up there and takes time to cool down during the night, even when you leave the terrace doors wide open. There is an AC of course, I used it only once and did not find it very effective, it mostly brought in fried food smell, but I only tried it that one time very briefly as I really don't like ACs, so I am sure you could make it work, especially if you visit during the summer.
The Wifi is pretty good for Athens, you can sit on the terrace and stream a movie without any problems.
The neighbourhood is very nice, residential, feels very safe and like a small village. The people are super friendly and will remember you and happily chat with you when you buy your groceries etc.
It is a bit of a walk from the metro (12 minutes or so) but there are buses closer by going to the city centre. Don't fully rely on Goog**map*, they are not up to date and some of the buses indicated there don't exist anymore. It is also a nice walk from the apartment to the city, taking you through some interesting neighbourhoods with plenty of street art and nice cafés etc.
If you come from the metro station, the best way to walk with luggage is to take Leof. Alexandra all the way to Gyzi street, you will avoid some pretty steep hills and stairs :)
Alex is a wonderful host and check-in and -out was very easy and flexible.
All in all: If you are looking for a place with an amazing view to rest and relax, want to stay in a non-touristy area of town that is still pretty easy to get to, I highly recommend this place!