El mercado de Navidad en Grand Place tiene lugar entre el 25 de noviembre y el 1 de enero. Creo que esto significa que el 1 de enero es el último día del mercado de Navidad. Sin embargo, para estar seguro, contactaría con un hotel en Bruselas o el municipio

Sorry but I don’t. I hadn’t heard of that before. I hope you have since found out. Kind regards.

I didn't go inside but outside, there is Christmas market all around, souvenir shops, and if you've sweet tooth, you should try their waffles too.

you can sit and rest inside tourisminfo office or in front of buildings of the grand palace but there are no any benches.

Flowertime takes place from 14th to 18th August 2019.

Op wandelafstand (een 100 meter) van de grote markt is er ook de mooie Koningsgalerij met shops, etc. Langs deze galerij kan men via de Beenhouwersstraat met haar talrijke restaurantjes zoals Chez Vincent, Aux Armes de Bruxelles, Chez Leon (deze zijn waarschijnlijk de beste) naar "Jeanneke Pis" gaan. In het straatje van Jeanneke Pis heeft men ook het Délirium Café (internationaal gekend bier café).

I believe it only happens every 2 years and it was in August 2018, the next one will be 2020. There are a lot of other beautiful things and places to see

The best, in my opinion, is to book one or two days in advance online. One can find good deals from many companies like onepark or neoparking (that are the two I personally use also in France).