There is no comparison between HIFS and any other Holiday Inn.
Unique features of HIFS:
* Free full breakfast buffet
* Kidsuites are genuine suites with separate master bedroom, kids' bedroom, and living room. Kidsuites at any other HI are just a regular hotel room with a partitioned area for the kids' space.
* Additional specialty suites like Cinemasuites and Romance suites
* Zero-depth entry pool with built-in activities, fountains, etc.
* Additional amenities like free mini-golf, karaoke, train ride tour around the hotel, etc.
Of course HIFS is also the most expensive HI, so it's largely a "you get what you pay for" situation.
--- Mark