A long ramble, starting with trying to find the Hot Well of Hotwells and leading up the side of the Avon Gorge to the Downs and then through Clifton for coffee.
This is Towerhirst, on Sea Walls Road, "A fine example of domestic architecture in the Free Gothic style", according to the listing. I heard somewhere that it was a wine merchant's house, and that he had the tower built so he could watch for his ships coming in, but I can't find much to back up that story. Apparently built c. 1891.