I've posted this in the comments below but in case you don't check, Brigitte you're absolutely right - it is indeed Zanzibar - on the East Coast of Africa!!!
Please email me Brigitte and we can talk which book you'd like me to send to you :)
My sparring duo have now moved off Zanzibar now to here, the even smaller island of Mnemba and I have to admit I'm worried I just going to have to leave them there forever and a day... they're not playing right!!!
Sigh.... I could go stay there forever right now...