The location of the apartment was very convenient - 5 min walk from Brown line stop and 10 from the Red line stop. It's also close to Old town shopping and dining area. The host was flexible and allowed us to store the luggage in the garage before the check-in time (4pm), which we very much appreciated. The unit was close to the brown line track, so you can hear the train - but it's not too bad. The host was very responsive and would answer messages usually within an hour, which was very helpful.
The only negative thing that we found is that the bedrooms were a bit awkwardly set up. It looks like a common area or living space between two original bedrooms were converted into a third bedroom - so it's not possible to get from bedroom 1 to bedroom 2 or its attached bathroom without going through this common bedroom 3. The space worked fine for our group - but it may need a bit of workaround for other groups in terms of figuring out how to share the space.