I inherited the Rear Left window dinette location and recently corrected the old installation mess with a replacement unit. Having camped in the 13 for close to two years now I like the location for two reasons.
1. In a 13 I personally wouldn't want to sacrifice the closet space.
2. There is nothing better on a hot day or evening then laying on that rear dinette bed awash in the AC blowing over you. The curvature of the roof brings the air right around the roof and down over you. Wonderful.....
Of course, everyone is different on how they view things so these are just our personal approach.
Here is our current installation: