A floating three-storey cabin moored off the northern coast of Pemba, with a bedroom suite submerged below the waterline. The Manta Resort's Underwater Room is one of the few places on earth where you can sleep with reef fish on every side of your bed. It is expensive (currently around US$1,500 a night) and famous; the experience is genuinely strange and the diving access excellent.
Even non-guests at the resort can sometimes book a single-night stay with advance reservation; it sells out months ahead in high season. Worth knowing about as the most distinctive single accommodation on Pemba even if you don't stay there.