I had a few days to spend in Chicago, with some business in the Loop. The place is very well-located in the heart of the City, and is right outside of a CTA Blue line station. My friend and I were able to walk to all the sights we wanted to see, and, upon our return, had a lovely speakeasy/karaoke bar in the same building!
The unit itself was spacious for two people, and could have easily fit up to 4 more with the pull-out sofabed in the unit. The tub was larger than most, and if we had planned on staying longer, would likely have seen use. If your plans have some downtime, there was a smart TV with HDMI hookups available, and the usual streaming services available.
My only caution is to light sleepers; the L is adjacent to the building, so if you're easily woken, this location may be a challenge for you.
That said, if you want a central location to go out and sightsee in the Loop, you can't go wrong!