Yes. If you reserve a seat online, you can select a seat near a baggage rack in the second booking step using the graphical overview ("Reserve requested seat" and then "Select seat"). Alternatively, you can look for rows of seats in the graphical overview with the seat backs facing in opposite directions, i.e. back to back. This is because there is a space between the rows of seats in which you can store your luggage at floor level. Please put any wheeled suitcases down so that they do not roll away during the journey and endanger other passengers.