Is the seat k 1229 in car 2 by the window? How to book tickets online without an ID card?

Yes, No.2 car/No.5 seat of K 1229 train is near the window, which is the innermost position of a three-person seat in the fourth row of the front section of this car.

The No.2 car of this K 1229 train is a hard-seat car without a conductor's room. The seating capacity is 1 18, and the window seats are: seats with tail numbers of 0, 4, 5 and 9, and seats 00 118. See attached drawings: