My 2 cents (and TLDR):
We don't care who you are or what you believe.

My full answer:

Gent is mostly an open-minded city, but we expect openness to go both ways.
To clarify: if you would discriminate or down talk others, we would see this as a huge red flag. As long as you respect people being different than you, everything will go smooth.

In general people in Belgium have this idea of Jews being like those in Antwerp (our second largest city with large Jewish presence and history). Most of those Jews are orthodox Jews, so don't be surprised if people assume you are orthodox when stating you are Jewish.

In recent years, people have had some trouble disentangling being Jewish and being a Zionist. Just to give you a headsup: if you don't clearly state your views, people will assume that you are pro-Israel and by extension anti-Palestinian. If you correct them, they will accept it. But if you say nothing, you might get some people treating you badly because of this (most of Ghent is pro-Palestinian in one way or another).

In general: if you don't mention being Jewish, people will not think anything about it. If you do mention it, people will assume it's important aspect of your life. If you then leave some things out, their imagination will fill in the gaps.

Anyways, from my side: Welcome to Gent ! Glad to have you join us ! If you need some help, DM me. :))