In the European Commission funded project Friendly Rest Room (FRR), ethical peer review was performed continuously throughout the project's lifetime. Ethical reviewers actively participated in the project by attending the project's meetings, assisting in designing user tests and developing together with the project workers a process for obtaining informed consent. The reviewers observed user involvement activities and collected data on the experiences of users and developers. In order to assess the ethical review from the point of view of its meaningfulness to project workers – engineers, designers, and social scientists – feedback and impressions were collected from them. In this paper, we describe the approach to ethical review adopted in the FRR project, report about the project workers' experiences with the ethical review in the project, and discuss what implications ethical review could have for assistive technology research and development work in general.