We had a nice stay at Nicoletta's place.
It's really well-located, so you can visit Bergamo easily and get to the train station very quickly if you need to (and you should really visit Bergamo). It's also incredibly close to bus stops.
The apartment itself is cosy, though probably better for a short stay rather than a long one, mostly because there's no place to put your clothes which mostly have to stay in your luggage (apart from what you can hang --and you can actually hang a lot of clothes).
Everything was cleaned very well, apart from what other people had to take care of: the pans and the cutlery mostly. So please, if you stay in her apartment, just learn how to wash dishes first and think that other people come after you... It will make it better for everyone!
Also, Nicoletta is incredibly reactive, you can be certain of it.
I recommend this apartment, without a doubt.