We had the pleasure of staying at the Peninsula last month. It is truly a five star, top luxury hotel. We found all of the staff to be very nice, lobby to be beautiful and we loved our room which was luxurious yet contemporary. It had great views of both Michigan Avenue and the Lake.
We had a wonderful dinner at the Shanghai Terrace (see separate review) and thought our breakfast was good too. We met a friend at the bar and generally liked its living room feel although it was a little dark.
Overall we had a great stay and would recommend this property strongly and look forward to returning.