here are some things that make us think we would be a good tour guide:
• It's been a long time we live in Tehran and we know it pretty well (we know its secret places, its traffic peak hours, its crowded/isolated places, …? Is there an idiom for this?)
• It doesn't matter if you've made a list of different places you'd like to visit, the fact that what time is appropriate for visiting which place, considering different factors, is what matters most
• Other than Tehran, we've visited many cities and we'd like to accompany you through your trip to these cities, such as Isfahan, Tabriz, Kerma…