We stayed three nights in this awesome mansion. Ryan was always available on short notice and the check-in was easy. We had all information we needed prior to our arrival.
We counted one toilet and three bathrooms, one was under construction but usable; so we never had to wait. There is a kitchen in the house and free coffee. We also used the laundry. Everything was fine. The room and the bed was big enough for two. There is also a TV (we never used) and a desk in the room. There is plenty of room in common living areas. The bus stations and the Green Line are just a short walk away so you can reach Millennium Park within 30 minutes.
The rooms have no keys. You can't lock them from outside.
We had a great time in Chicago and this was a good placed to stay.