This paper discusses Living Labs from a researcher view based on experiences from Halmstad Living Lab with about 100 activities with different stakeholders. We define Living Labs as a milieu based on continuity, in which methods and techniques are used to empower users and to involve all relevant stakeholders, in open innovation processes in realistic settings. The relevant stakeholders are; researchers, companies, users, public partners and stakeholders of emerging technology. We argue for the relevance of the researcher stakeholder and discuss the dilemmas of an active researcher regarding role, process, outcome and relations. We conclude by suggesting a model indicating tensions in a Living Lab from a researcher view, i.e. neutrality vs. taking sides; research process vs. innovation process; research contribution vs. market value; and critical reflections vs. socialization.