Spice farm, Stone Town and Prison Island in one long day.

The big one. Three icons in a single day for travellers who are short on time but not on energy.
Morning on a spice plantation: taste, smell, learn. Midday in Stone Town: alleyways, the old fort, the market, lunch at a local spot. Afternoon on the water: the boat to Prison Island and its giant tortoises.
It is a full day and it moves. Your guide handles every transfer so all you do is show up and enjoy it.
Abdalla is based on Zanzibar and guides the tours himself when he is available. If another local guide will take you, Abdalla confirms who it is before you agree the booking.