Two stays create separate journeys
Flying into Jeddah, staying in Taif and spending a final night in Jeddah creates a different plan from a simple airport return. Your first transfer ends at Taif accommodation. The later transfer ends at a Jeddah property. A further journey may be needed from that property to the departure airport.
Write each stage independently before comparing transport options. This prevents the phrase return transfer from concealing a hotel stop or suggesting that the original destination will also be the final pickup point. Each stage should have its own agreed date, origin and endpoint.
Decide what the Jeddah night is for
A final Jeddah night might be intended for a city visit, an accommodation preference or a simpler departure-day plan. State that purpose privately when choosing the hotel and outings. It helps you decide whether the transfer from Taif should end at accommodation or at another specifically arranged place.
Do not turn the journey into a sightseeing itinerary by implication. If you want to visit somewhere before reaching the Jeddah hotel, make that a deliberate additional request. A transfer price should not be read as covering an afternoon of flexible city use.
Protect the departure stage
Check which booking covers the journey to the airport. A transfer from Taif to a Jeddah hotel does not, by itself, describe the next day's airport movement. Keep the airport departure stage visible in the plan, even if you expect to arrange it later.
For a useful written overview, use three lines: airport to Taif accommodation; Taif accommodation to Jeddah accommodation; Jeddah accommodation to the departure airport. Add sightseeing only where its scope has been agreed.
This structure also makes revisions simpler. A change to the final hotel affects the relevant stages without requiring everyone to reinterpret a vague round-trip description. You can then review the total journey plan rather than judging it by one attractive fare.