Moon and Lonely Planet books mention Habana 1791 on Calle Mercaderes in Habana Vieja and it sounds quite interesting. Apparently it sells perfumes made by hand from tropical flowers and "retains the air of a working museum". I found one rather scathing review on a blog but no other mention found online yet. Has anyone from Tripadvisor been there and would recommend visiting? Sounds like it might be an interesting place to buy a gift to take home.