This study attempts to describe the types of dialect accommodation, observed in first-generation immigrant dialect contact, between adult speakers of mutually intelligible yet regionally different varieties, in casu that of 39 university students from Moravia (in the east of the Czech Republic) living at a hall of residence in Prague, Bohemia. It examines which host variety features are the most or least (and why) learned, how fast individual features are assumed and whether accommodation attends a specific path. The focus lies both on language-internal and extralinguistic factors that foster, or defer or even preclude the assimilation of specific linguistic items.