Originally Posted by legalalien

Westin Rosemont is walking distance from Rosemont CTA, so if you stay there Thursday night you can easily get to the station in the morning and/or walk there Sunday night after a stay in the city. There are other hotels very close to either Rosemont or Cumberland CTA stop.

The way this winter has been going you should be fine walking around the city in early March. Pack some layers and waterproof shoes/boots.