exraf
As usual, not a straightforward answer. According to seatguru, there are two versions of VS 343. V1 has 2-2-2 in upper and 1A is part of a pair behind a galley. In V2, it has 1-1-1 and is behind a closet. The lav appears to be on the forward right side of the cabin.
Edited to add Del should be a suite (1-1-1) but Bom could be either. Check out v-flyer.com when you can.