It looks like a work yard that R L Roberts had with that fixed crane, but the layout of the houses behind doesn't remind me of the early Council Street that I can remember.
Apart from that the houses are 3 storeys high with high pitched rooves and that again doesn't remind me of the old Council Street.
The Conwy Archives has rate books and the yard will be listed in it so that could establish it's location. An other place of early industrial work was Back Madoc Street, it could even be there. The photo looks like the early 1900's