6 is nice because it has a shelf on top of the PTVs where you can put stuff (including trays if you need to get up during meal service). 6 also has a foot well that seems to be wider but shorter than the other rows (could be good or bad depending on the passenger). But yes, it's near the lav and possibly chatty FAs. 6C is also sort of in the aisle (which is off-center in the galley/lav area) and is likely to get bumped at various times.

If you want a window view unobstructed by wing, choose row 6 or 7.