First row by the window.
The most suitable position for mind wandering is also the most easily overlooked position.
When the sky is clear in summer, you can see through the window the washed blue sky and the soft and white marshmallow-like cumulonimbus clouds floating above.
The angle to see the blackboard is not very good, but it doesn't matter, you won't be caught secretly playing with your phone.
The best and worst position.