In a word, wonderful. Food as good as any cruise ship, but long times at sea. You must be able to keep yourseves amused Our cabin was as big as any suite on a cruise line.
I have never heard of a cargo ship cruise. what is it and how did you find out about it?
Haven't really been on one myself but do have a few friends who have. The overview I have from them is that it was a bit of an adventure, but they probably wouldn't do it again. Food seemed to vary from OK to downright disgusting, but possibly they were comparing with Cruise Ships. Sorry I can't be more positive.
Never but friends of ours regulary sailed on the RSM St Helena from Avonmouth, now out of Bary S Wales to Cape Town and the Atlantic ISLANDS they raved about it, but other stories on cargo ships normally carry about 12 passengers and you have to get on with them all in a confined area, as the ships are cargo ships and not cruise ship.
If you are a banana it's fin.