help me find this episode

tried chatgpt but didn't help

i remember the episode begins with the mouri family stopping the car (probably due to some problem), it was in the fall as well, it takes place in some traditional japanese motel (probably family owned, where the father and his sons are all there)... in the end it turns out that the murder was executed thorough filling a whole room with water. i don't remember whether it was 1 or 2-part episode. it's probably a filler as well.

it's definitely within the first 200-250 episodes max, most probably within the first 150