The ARIEL 2016 conference will be held in:

University Foundation
11 rue d'Egmont
1000 BRUSSELS
Belgium

The University Foundation is in the heart of Brussels, with plenty of hotel accommodation around and easily reachable via public transport (underground stations Troon/Trône and Porte de Namur/Naamsepoort). 

Brussels is well connected to all major cities across Europe with direct train and plane connections.

Find out what to do / where to eat / where to stay on the website of visit.brussels

In general, the area around Grand Place is nice to stay with plenty of restaurants, things to see and do, and is reasonably close to the meeting venue:
Walking: 20 min - 1.6km
Bus 95 to Trône: 10 min   http://www.stib-mivb.be/
Villo public city bikes: http://www.villo.be/