We stayed the three of us at the Rosa Grand Milano 4 nights in April 2013.
The common parts of the hotel are beautiful and modern. Our room was very big and clean. However, the furniture was a bit old fashionned and deserved a renewal.
The best thing of this hotel is its location, just behind the Dôme and near the main shopping area.
The breakfast is great for Italy and the service is good.
All in all I would certainly recommend this hotel.