The paper concerns one of the construction discovered within the early medieval, immediately adjacent to a fortified centre, ancillary settlement in kałdus (historical chełmno), which has been interpreted as remains of a supposed inn. it includes formal analysis of the construction and of movable objects found within, carried out in comparison with the results of studies over the spatial and functional layout of the settlement. The analysis was carried out in the context of theoretical knowledge on medieval inns, and especially of the content of the so-called mogilno forgery, where nonum forum cum tabernario in Culmine was mentioned.