We report on the lessons learnt during the application of a methodology to develop Intelligent Environments. One important feature of the methodology is that of being strongly user-centred and we report on how that interaction with users took place and how it continuously shaped our project aspirations and outcomes. The methodology was applied to a project which aimed at helping people with Downs Syndrome and those with similar conditions and needs, to be more included in society. The project was developed by amconsortium of commercial, academic, and end-user supporting organizations. We explain what type of stakeholders engaging activities were considered, how these were distributed along the lifetime of the project and their impact
