I feel pretty safe in Haifa, but it depends on the area. Hadar is best avoided at night, but higher up on the mountain it's completely safe. there is a mixed population here, but mostly it is nice and quiet

The only threat could possibly come from members of terrorist organisations from Lebanon or Syria; locals are all super nice and friendly. There are zero problems walking the city at night, especially in the center. It's the most multicultural city in Israel, that has Ashkenazi, Sefardi and Mizrahi Jews living side by side with Muslim and Christian Arabs, Russians, European and Ethiopians, almost everyone is super nice to visitors and each other. The rockets also usually don't reach here so that's also a plus.

Haifa is a very safe city. You can travel alone at night, the places to hang out is central and close to public transportation and students live there. The industrial zone is out of town. You can safely walk home at night. There is only one area preferd to avoid at night, and still it safe there. Just not pleasant. Man are not harrasing woman. There is not kidnapping. You don't have refugees inside the city.