Not a fan!
Stayed in a 1 bedroom suite. Felt small, not luxurious. The worst feature was the bathroom. Surprisingly small, not separate tub, shower curtain. Really.....shower curtain in a $800/night room?? Water pressure fair. 
Service was fine, pleasant but not exceptional. Have stayed at The Pierre numerous times and will return there next visit. 
The kitchen in the suite was nice but not necessary. Takes up space and money that could be spent on a better bathroom. Also they have an odd key system that is unnecessarily awkward to use.