Unguja, the island almost everyone means when they say Zanzibar, runs about 85 kilometres from its northern tip to its southern one and is rarely more than 30 across. On a map that reads like somewhere you could cover in a long weekend. In practice the roads are single carriageway, the last kilometre to nearly every beach hotel is loose sand, and you will be moving by private transfer at the pace of whatever lorry is ahead of you. Two hours between bases is normal. Four or five hours in the car is what happens to people who try to run the whole island from one hotel.
The map also hides the thing that matters most here: on the majority of Zanzibar's coastline, the sea is not where it looks like it is. Twice a day it leaves, and on the east coast it leaves comprehensively.
Eight days on the ground is the number that works. That is three bases at roughly three nights each, with the arrival and departure days absorbed by Stone Town, which sits about fifteen minutes from Abeid Amani Karume International Airport. Five days is still a genuine trip if you cut one base. Below that you are mostly buying transfers.
The tide writes the timetable, not the guidebook
Along the east coast, at Paje, Jambiani, Bwejuu and Matemwe, the water can withdraw the better part of a kilometre at low tide, exposing a vast pale reef flat stitched with seaweed lines. It comes back the same way a few hours later. Tides run roughly six hours apart and shift about an hour later each day, and they are at their most extreme around the full and new moon. None of this is a flaw, but it decides what a given morning can contain. You cannot swim off Paje at low water, and you cannot walk out to the reef pools at high water.
The northern tip behaves differently. Nungwi and neighbouring Kendwa sit on a deep-water crescent where the tidal range is far less dramatic and the sea stays swimmable at more or less any hour. That single geographic fact is the argument for the sequence proposed here: give the north the middle of your trip, when you want water on demand and no arithmetic, and give the east coast the end, when you have learned to read the table and can treat low tide as an activity rather than a disappointment.
Pick up a printed tide table on your first day. Most hotels and dive shops post one at reception, and it will shape your week more usefully than any list of attractions.
Days one to three: Stone Town first, never last
There are three reasons to start in Stone Town rather than save it. You land beside it. A jet-lagged first afternoon suits a maze where getting lost is the point. And a town of coral-rag alleys, carved doors and unrelenting midday heat is something almost nobody willingly drives back into after three days of doing nothing on a beach. Do it while you still have the appetite.
Spend the first evening walking, then be at Forodhani Gardens on the seafront as the light goes. The open-air food stalls set up around dusk, and the things worth queueing for are urojo, the thick turmeric-yellow soup loaded with fritters, cassava and chutney, and hand-pressed sugarcane juice with lime and ginger. Expect a handful of dollars to eat well; agree what you are paying before anything is handed over. For a drink afterwards, the terrace at the Africa House Hotel in Shangani has faced the sunset for well over a century.
Give the second morning to the town proper, starting early while it is still bearable. Darajani Market is best before the heat concentrates the fish hall. From there it is a short walk to the Anglican cathedral built on the site of the old slave market, where the surviving underground holding chambers and the memorial of chained figures sunk into the ground beside the church are the most important thing in Stone Town and deserve more than twenty minutes. The Old Fort and the seafront Old Dispensary are worth circling; the Freddie Mercury House museum is a brisk fifteen minutes unless you are a devotee. Note that the House of Wonders, the great pillared landmark on the waterfront, has been closed since a large section of its facade and clock tower collapsed in December 2020, and restoration has not yet returned it to the public. Do not build an afternoon around it.
Lunch at Lukmaan, tucked just behind the Anglican cathedral, where Swahili curries, biryani and grilled fish come at prices closer to what Zanzibaris pay than what hotels charge. Retreat somewhere cool for the worst of the afternoon. For dinner, the rooftop tea house at Emerson Spice serves a set multi-course seafood menu above the rooftops, typically starting around sunset, and it books out; reserve several days ahead and expect a serious per-person figure by local standards. Emerson on Hurumzi runs a comparable rooftop under the same ownership.
Keep the third day to a single half-day on the water rather than two. The short boat out to Changuu, still universally called Prison Island, takes roughly half an hour and delivers you to a colony of Aldabra giant tortoises, descendants of a gift from the Seychelles in 1919, some of them extremely old. Island entry is a few dollars and the boat is chartered per vessel rather than per head, so it is much cheaper shared. Most operators extend the trip to a sandbank for lunch. The alternative is a spice farm inland towards Kizimbani, which is genuinely interesting if you have any curiosity about how cloves, nutmeg and cinnamon actually grow. Do one. Doing both turns a good day into a shuttle.
For where to sleep, the restored merchant houses are the point of staying in town: Emerson Spice and Emerson on Hurumzi at the characterful end, Jafferji House in the same tradition, the Zanzibar Coffee House for something plainer and cheaper, and the Park Hyatt on the seafront if budget is not the constraint. Dress modestly in the lanes, covering shoulders and knees. It is a Muslim town and the request is a small one.
