I have stayed in a few AI hotels, mainly going to the buffet restaurant every night - because we needed no planning, while restaurants needed booking.
The food was surprisingly good! I did research and avoided the ones with photos of buffets that didn't seem appealing, so it wasn't random.
Maybe not Michelin star gourmet - it's a buffet - but with different menus every night, always stations for meat/ fresh fish/ etc, food was cooked perfectly and to your liking, many different salads, choices of seafood, vegs, and choices of themed dishes (I don't know, paella, tajine, beuf bourguignon, spring rolls..)
I have been very pleasantly surprised, and I don't agree that it's necessarily "cheap and easy". What is easy is the choice so everyone can find what they like. There's usually always some pizzas which at worst could feed my child, and what child doesn't like the table of bread and cheese .
It's not cheap of course, but neither are decent restaurants.