Neither the Hilton or HGI/HS which are in the same building have much of a Harbor View. Some rooms at the Hilton have views the ballpark, as does the EL which would be cool if the Orioles are playing. I like the location of the HS better, walking distance to Little Italy & Fells Point. I wouldn't pay $100/night more for the Hilton.
Renaissance has great views of the Inner Harbor.