We mostly recommend open source Content Management Systems to host web sites but sometimes alternatives can make sense such as google sites.
In the case of associations, you can register for a free google suite account allowing to host websites for free using a simple but very intuitive web site designer. On top of this, this allows access to a number of key google services useful to manage your association. We can help you get started by facilitating the steps required (domain name registration, validation of your association status with google, etc …).