Those Brussels inApril will notice that the air is quite pleasant at 13C in the daytime. Nights are actually pretty chilly at 5C. The 18 days of rain will probably give the impression that it's actually colder than it actually is. Luckily, the daylight will last for about 6 hours, giving more time to explore the city.
As far as accommodation goes,Tulip Inn Antwerpen hotel is really close to the city centre, offers free Wi-Fi, as well as a breakfast buffet every morning. This hotel changed its name from Campanile Antwerp to Tulip Inn Antwerpen, so ask for this hotel as well if you have a hard time finding it.
Another cozy hotel isHotel Bloom! This modern, well equipped hotel has a special offer for those that spend the weekend there: the second breakfast is served for free.
Easter Monday marks a giant egg hunt around Brussels' parks. If you travel with your kids, make sure to take them to this event they won't forgive you if you don't!
From the 2nd to the 13th, theFestival of Fantastic Film takes place in Brussels. You'll have the chance to see about 150 films, as well as people dressed up like all sorts of fantastical creatures vampires, demons and so forth.
Mid April marks the opening of theRoyal Greenhouse of Laeken to the public. The date marks the full bloom of the azaleas and the greenhouse will stay open only till May 5th. If you miss this chance, your next chance will be next year, so grab it while you can.