Hi Derien
Dos Cottages were adjacent to the Dos Works which later became Cordes if my memory serves me.
If you go onto multimap and type in Queens Hill, Newport then Dos Cottages are slightly north of the junction of Queens Hill Crescent where it joins Queens Hill and next to Lucas Street. I can't for the life of me remember how many cottages there are - and until a couple of years ago I walked past them every day going to the bus station (old age)

But for the record, they are what I term back to front as you enter through a door in the wall from Queens Hill then there is a small yard but they do appear to have large gardens at the rear - birds eye view on multimap.
Part of the site of the Dos Works is now the LDS Church and I am not sure but I think MD Fabrications also used part of the site but I could be totally wrong on that one.
HTH
Louise