This flat was the perfect size for our party of three. It's a great location, just a short walk from the centre of town. It's also wonderfully quiet with no noise at night time.
The only downside for us was that the Aircon simply isn't powerful enough. We arrived to a 30°c+ apartment and it took literally days of it being on to get the temperature down to 23. So that wasn't ideal. Then when we did want to sit on the balcony (which has great views of the leaning tower!) in the evening, the air con vent blasted hot air towards us.
The bathroom does have a bit of an eggy smell when you run the taps too - but that's to be expected in an old apartment block I guess.
Communication from our hosts was prompt and friendly and overall our stay was good. Despite my issues with AC I'd still recommend - it was always cooler indoors than out at least!