We attended the same convention last year and stayed in a downtown hotel for the convenience of being attached to the Convention Center. They charged for everything - including $18 a day for parking and additional for wi-fi -- and an average sized room. This year we opted for the Ambassador -- an ENORMOUS room and none of those additional charges. (Granted, the bathroom was miniscule and the closet was minisculer... but there was a separate vanity area outside the bathroom and who needs that much closet space in a hotel room.) Staff was accommodating in every way and the free shuttle will take you just about anywhere and pick you up.
The neighborhood seems to alarm some people -- I didn't find it that troublesome. It's an urban hotel, folks. It might spook some people from the 'burbs, but again, how much time are you going to spend walking around the neighborhood. That said, my early morning walk to the Joan of Arc chapel on the Marquette University campus was undisturbed. The hotel property itself is well-kept, easy to access, and has covered parking and a fenced lot.
We didn't eat at the hotel restaurant but the coffeeshop was Starbucks and everything it needed to be for grabbing a quick breakfast or coffee and hitting the road. There's wireless wi-fi throughout the public areas and they have some desktop computers in the coffeeshop if you didn't bring your laptop.
A couple of blocks east from the hotel is the Pabst mansion -- they do an excellent tour and the house is pretty cool. A couple of blocks further and you are on the Marquette campus -- check out the 15th century Joan of Arc Chapel. Or drive a few blocks west on Wisconsin and check out the incredible Moorish architecture of the Shriner's Temple.