The apartment was exactly as described and we enjoyed staying there. There was plenty of storage space and the beds were comfortable. The kitchen was equipped with everything we needed but having Eataly so close was very convenient for when we didn't want to cook, although prospective guests should be aware that Eataly is expensive. Our only (small) complaint is that there was no spare bed linen or towels and because we were there for 8 nights I would have liked a change; there is a washing machine but nowhere to dry sheets and towels quickly.
Piramide Metro wasn't quite as easy to get to as we had expected (Ostiense railway station is very close but Piramide Metro is on the other side of the railway tracks and it took us a while to work out how to get there). I think the problem is that they are working on a new Metro line which means that the usual, easy underground route is currently closed. It should be much easier when the works are finished.