International universities often promote inclusive learning environments to aid their sojourners' social integration and improve their well-being. However, little is known about how social experiences with inclusion and integration (SEII) unfold for international PhD candidates in Dutch research universities (DRUs). This study uses the narratives of twenty IPCs to understand the factors that play a role in their SEII in a DRU. Findings suggest that nine factors may define SEII among the participants. Two factors--prior experiences in an ILE and identity in PhD role--played a role in participants' early SEII, while seven factors played a role in participants' early and later SEII. These included IPCs' social participation level, intercultural interaction dynamics, shared language adaptation, cultural events, university's international campus climate, social support, and perceived prejudice and stereotypes. IPCs and their international universities should align expectations to promote an inclusive social climate to foster social integration of IPCs.