Only you can be the judge if you are comfortable walking in the area as night. I recommend going there at night with a friend and seeing you are comfortable. Realtors cannot comment if an area is "bad" or "good" or unsafe. I recommend contacting the Jersey City Police Department and asking them for a crime report in that area. You may also want to ask some neighbors in the area when you go back and visit. Here is the website for the JCPD.
Please let me know if you have any additional questions.
All the best in your home search,
Walter J. Burns
1 Newark St.
Hoboken, NJ 07030
201-653-8488 Ext: 230