I stayed for four nights in an Executive Suite at The Peninsula while visiting friends from my college days. This was my second stay at The Peninsula and it won't be my last. In addition to the stunning service and facilities, I was able to get a very decent rate under one of their summer specials.
My room was extremely spacious (see photos)--separate living room, entrance hallway, connecting hallway, etc. One of my favorite things about the Peninsula is the amount of room devoted to dressing--plenty of closet space, drawers, and mirrors. The sound-proofing was superb--windows open you could hear sirens and all the other sounds of the city, but once they were closed there was no sound from outside.
One of the most attractive things about this room was the bathtub with a window overlooking Michigan Avenue--I took baths just to be able to look through the window!
The technology is, if anything, over the top--I counted six telephones or equivalents (like the voice-operated one in the bathtub) in the suite, two televisions, a stereo system, and the Peninsula-standard electronic control systems (see photo)--on one morning when I slept in light and housekeeping knocked on the door (a long way from the bedroom) I just had to roll over and hit the "Privacy" button on the phone--a light turned on outside the room and that was it.
No complaints at all about this trip, but I do have two suggestions, both from The Berkeley in London--
1) The deck chairs on the sun roof outside often appeared occupied even though no-one was there--it would be worthwhile to clean these more frequently or to put up a sign asking people to clear away their belongings when they were done so that more people could enjoy the sun deck.
2) Shoes left overnight for polishing should be returned with temporary shoe trees.