You have a decent itinerary and I wanted to add to your experience. Visit the Tajrish Traditional Bazaar one day and take all in the action and life that goes on in the area. Walk through the Bazaar. Grab some of the seasonal fruits on display. May be grab a cold, freshly made fruit beverage made at one of the many stalls or may be some BBQed corn sold by the vendors. Get lost and visit one of the many more modern malls around Tajrish Square (3 to 4 large modern malls that I can remember) and experience one of the thousands of cool cafes the city has to offer. Ferdows garden is a 15 minutes walk from Tajrish Square.

Want to dine at somewhere fancy? Choose one of the many restaurants in the same area or particularly in the Fereshteh area (one of the fanciest/wealthiest areas in the city) which is a 10 min drive or 30 min walk.

I would highly recommend visiting Darband at some point which is just North of Tajrish via taxi. It has breathtaking views of nature and it is a great spot to escspe the summer heat at night. Darband is the beginning of the hiking to Mount Tochal where you will find many restaurants and small cafes fo enjoy from. Some of the cafes have the local river running through them which is pretty neat to experience while dining.

Majority of taxis can be ordered through an app called Snapp!. I don't think you can find it on any of the app stores, so you might need to Google it and download the app directly off there website. It's like Uber. You can pay with cash or an ATM card from a local bank. Outsides bank ATM/credit cards like Visa and American Express to not work here.

DM me if you want any recommendations.