It is fine to sell bitcoin as long as you do not do it as a business. There were a few cases where people got hit, but they were doing large volumes.
I suggest trading small amounts and use the buddy system if its a larger amount.
I recently did a in person trade that went super smooth, because both of us were professional about it.
This was not a cash trade, but the basics apply.
Transmit the specific amount you intend to sell to a separate wallet.
Do not walk around with a laptop or cellphone loaded with tons of coin.
I use bitpay or copay, because you can scan the other person's QR from blockchain.
It avoid typos and copy+paste malware.
Also adjust max+ fees to make sure it makes it into the next block, 1 confirmation within 20mins.
I personally will not trade anything on craigslist or any other, after sunset.
If it is a large cash trade and your alone, some township have parking spaces for social media trades.
www.safetradestations.comIf something does not feel right, leave.
There was a recent story about a guy in Hong Kong that was robbed during a local trade.
Hope this helps.
PM me if you have any questions, I can also help you spot counterfeit bills.