I was Kimpton Inner Circle for many years and am now Diamond Ambassador. The two Kimptons are my go-tos in Philadelphia even with my Hyatt Globalist status benefits.

Related thread for the two properties is here Which Kimpton Monaco or Palomar in Philadelphia?

It all boils down to a few things for me. Monaco is my choice when I am travelling by car and/or I want to play tourist in the Old City area or if I am able to get a unicorn reservation at Zahav. There's several other nice places to eat in the area that are within walking distance. Rittenhouse Square is fun for the weekend farmer's market, hipster cafes, and even foodier places to eat. It's also walking distance to the train station if the weather's good. I like the rooms and overall decor of the Monaco over the Palomar but have always had good upgrades at both. There's a great concierge at the Monaco who totally hooked me up this past June with some over-the-top amenities as a returning guest who's stayed there several times over the years.