1. In your final translation you say “ je traverserais la ville sur une gondale “, which I understand, but could you say “ je traverserais la ville en gondale “ for “ I would cross the city by gondola “
2. My dictionary translates “ a feathered headdress “ as “ une coiffure “ and describes “ une coiffe “ as a lace headdress. Can I get away with simply stating “une coiffure” or do I need to clarify further with “ à plume “ ?