brussels this summer(20-27 june)

You can check sites for historical weather data to decide if you need AC or not. For example, midpoint of your trip is June 24. Highs the past five years on that date have been:
2023: 81 (F)
2022: 73
2021: 64
2020: 86
2019: 88
So, more days above 80 degrees than not. Would you need AC in those situations?

Sablon is a very desirable and safe neighborhood. We stayed to the north, Sainte Catherine, which is a little more lively. Fortunately, we had a quiet apartment. The only area I've ever really considered "unsafe" is Midi, and even then it is all relative. Same for street safety, pickpockets, scams, etc. All cities have this to a degree, and all such circumstances can be avoided with simple precautionary steps. Brussels is nowhere near as popular as Paris for tourists and, by extension, those that target them.

I don't have enough information to suggest that you change your plans. But many posters on this newsboard prefer Ghent or Antwerp, even for a multi-day stay. Brussels has plenty to see, especially museums. But as the EU "capital", it's a big city with (IMHO) less to offer than Paris. Other posters here can't resist the medieval charm of the old center of Brugge, even if they have to stay in a modern motel because the older BnB's are too expensive. It happens to be very easy to make cheap, unreserved train outings between all of these cities.

You haven't filled in the 'home city/area' of your Public Profile. But it seems odd to me that you ask about "scams" rather than "crime" or "personal safety." Street crime is much lower in Europe than in the U.S. But tourists walking slowly, with their heads pointing up, can be targeted anywhere.

Because I haven't been to Belgium in ten years, I won't venture an opinion. But I've spent many weeks in Antwerp, which has more of an "Amsterdam vibe" than Brussels, and always felt very safe. EDIT: By "Amsterdam vibe", I mean "fun, major city of the world, but with drug/homeless problems and counter-culture attractiveness." That is NOT a slam, I've been there at least five times.

I will also add that I don't use AirBnB because I believe it causes so much harm to local real estate markets. Even in my high-income New Jersey suburb of NYC, short-term rentals are outlawed.

To Tim's first point you might find this post useful.

As to the ethics of Airbnb, there are many threads on this forum on the topic, as well much in the larger travel universe of the internet. The best advice for any traveler is to take the time to research the topic and educate yourself, making an informed decision at the end of your 360 review of the sources. And actually, I'd say exactly the same thing about the topic of safety and "scams."

It's true that other Belgian cities may have a more charming overall appearance. However Brussels works perfectly for a week's stay due to the transportation connections. Brugge, Antwerp, and Ghent are all very easy day trips by train from Brussels. And Brussels has its own charms, including the Grand Place, spectacular Musee des Instruments, and Fine Arts Museum. I think you've picked the right place.
As the poster above noted, Brussels is not as heavily frequented by tourists as Amsterdam or Paris. I've been to Brussels many times, and while one always needs to be careful, I feel more relaxed in Brussels than I do in the larger cities where scams seem more "in your face."

Greetings
Thanks all for the great help
I m going to travel with my family that is why I m trying to make sure that I don’t fall victim to any scams.and I m looking forward to enjoy the country and the culture …