I have visited Isfahan, I loved it… But not alone with family… stay in called oldest hotel in the world. It was amazing I'm not sure I think it was: Abbasi Hotel. I would recommend to go with the tour If you are alone…
It’s for sure original and beautiful. I loved walking in old residential street and they let us go in and see the amazing architecture… March-April or autumn are the best but don’t go around 20 to 28 March…
Isfahan is one the most beautiful cities of Iran with lots of historical places. you should go and visit. you can buy lots of handicrafts ,sweets,dresses etc. it is safe to travel but now it will be little cold or maybe snowing . make sure to check the tempreture befor going. best of luck.