The sharing of space between guests and hosts in peer-to-peer (P2P) accommodations blurs the boundaries between a host’s and a guest’s spaces, which renders P2P accommodations a unique context for the examinations of guest experiences through the lens of territoriality. This study aims to uncover P2P accommodation guests’ feelings of staying in a shared territory using interpretative phenomenological analysis. Interviews results demonstrated two territorial senses coexisted in P2P accommodation guests’ experiences: the sense of being in others’ territory and the sense of being in one’s own territory. The salience of these territorial senses was subject to eight groups of factors, including the physical environment of P2P accommodation rentals, the host’s hospitableness, and multiple situational factors.