Excellent staff. Excellent breakfast. Stylish design.
For arrivals via public train - You just need to take the A Line train to the Re di Roma metro stop. Exit underground via the Via Vercelli exit and you emerge on the street avoiding all the traffic by the square. Continue to the end of the block and the hotel is on the left.
If staying and want to eat locally, I recommend La Foglietta. and for the BEST gelato, try Procopio by the metro stop park!