Our paper aimed to identify key factors affecting the use of peer to peer accommodation through the generation of millennials. The analysis of customer behaviour was based on a goal-oriented behavioural model (MGB) which was enlarged by the environmental responsibility and the impact of digital platforms. According to the findings of structural modelling, important influences on the desire to use a peer to peer (P2P) accommodation included the millennial generation’s attitudes towards social benefits and previous authentic experiences. The interesting finding is that environmental aspects alone were not a sufficient motivator to increase millennials’ desire to use a P2P accommodation.