I have a 223 and it's one of my favorite machines. Very smooth and quiet and sturdy! It's all metal and weighs about 37lbs so the cabinet is a plus. I picked up mine at a local thrift as a machine to keep at my daughter's but loved the way it sewed so much, I ended up with it at home. The foot controller is like mine and since it's a carbon stack type, it does tend to get warm if you are sewing slowly for extended periods. I have an electronic replacement controller to install, just haven't gotten around to it. AndyTube on YouTube has a tutorial on how to refurbish this type of controller if needed.
Pluses on this machine are: all metal, smooth, quiet sewing, standard class 15 bobbin and standard needles. Simple bobbin winder. Easy to find and install belt. (I think this machine can be treadled in a Singer cabinet) Standard Singer tension unit so it's easy to fix/replace it need be. Low shank feet. There is a free download manual at
https://www.singer.com/support. Just type 223 in the search box and choose " 223 sewing machine" in the search results.
Minuses: it's heavy so not really portable. It doesn't have a removable top "lid" but does have a large access panel in the back for oiling, it also has a removable panel to access the needlebar area. Other than that, I got nuthin'!
The machine pictured looks okay to me, the insides don't look over oiled, and the paint chips on the bed edge look like what I call honest sewing wear, not abuse. And the wiring looks okay from the pics, but give it a good going over anyway. The unattached lamp unit should have a bracket attached to it (or to the machine) that screws to the back access panel. Since there's no pic of the back of the machine, check to see the access panel is actually there to cover the back of the machine. The bracket screws to the lamp at both ends, so if the bracket is missing, you could fabricate one, but the back panel is important.
Holler if you need pics or more info for your friend. I paid about $35 for mine with no cabinet and it was a deal. (senior discount!) The $100 price is decent for a machine and cabinet.
MJ