airlink JNB SZK

Hi, anybody fly this recently? We are booking next summer and trying to pick seats. Seating is 1 - 2. My recollection of most of these smaller planes is the window seat ceiling and floor is somewhat curved making for a cozy experience. Can anyone advise?

Embraer 190 going to SZK
Embraer Rj140 on the return to JNB