I don't see any glaring issues with the Sonoma. My guess is it has had a fair amount of use.
Those are the standard "drop bars" as in the photo above (so ignore the comment about the brakes).
It does appear that it may also have removable TT/Tri bars attached, but not visible. You can research those if you wish.
It also has "clipless pedals". You can ride those with normal shoes for a test ride, but you'll eventually want to either get clipless shoes to use those, or flat pedals (or a different model of Clipless).
The bike appears to be in the middle front, small rear sprockets, and the chain may be slightly too loose (but easy enough to fix).
The size is probably fine for you.
Last edited by CliffordK; 07-22-21 at 02:34 PM.