Our stay at Irene's place was actually nice.
Positive aspects: It was very clean; a lot of towels were prepared; there was coffee, jam, toast, fruit prepared for us; flexible check-in with a key-box; the apartment is pretty spacious and light-flooded; there is a piano, what we liked a lot; 2 pairs of keys; the metro is just around the corner (directly to duomo and the centre); very well equipped kitchen - for those who would like to cook a lot a very positive fact
Negative aspects: the apartment is very badly soundproofed (you hear everything through the doors); the bathroom (including the toilet) is situated in one of the bedrooms and there is no window; not a lot of toilet paper was prepared (3 rolls for 3 nights and 4 people); there was hardly no pressure of the water in the shower, the water changed from being hot & cold very often; the whole building was a construction site, what we didn't know and what nobody told us
Our conclusion: the cost-effectiveness is good. the neighborhood is quiet and un-touristic, we liked that. if you travel with good friends or family it doesn't matter that you hear everything. Still I wouldn't recommend it to 2 couples for instance, because there is a lack of privacy.