With your original roll of 15, here’s what you can track:

Sandwich’s scent leads you towards the gambling dens, unsurprisingly. Furthermore it leads you near an old bell tower however it doesn’t lead you in. It instead leads you to a somewhat upscale Bathhouse. Upscale in the sense that there were private guards on the scene the keep out riffraff and make sure their operations were not bothered by unruly folks. The scent ends here.