reasons :
1) theres a lot of different brands of auto toliet bowl in the market ( your 3 stars hotel must be using lower end type )
2) you dont know how to use it correctly . ( theres so many buttons )
3) once you get used to the auto toliet bowl ..you cant shit in normal ones ( trust me ) because you can use the water to spray your asshole before you shit ...making you " song " helping you shit better .
Don't know how many star the hotel is, my company normally arrange 4 star hotels in most location so I'm assuming it's 4 star. I normally stay at the Akasaka Excel Hotel in Tokyo
Took a pic of it before this is what it looks like, maybe U can tell me if it's considered good or not