I was looking froward to the Grand Bazaar and while I'm glad I was able to see it, I would…read morerecommend visiting the Spice Bazaar instead.
First, to describe, the Grand Bazaar was overwhelmingly smokey. With the heat the smell was even more unpleasant on top of being extremely crowded and I was disappointed to learn from our guide that everything luxury branded is fake.
Our visit was included in a tour we took and while I'm glad I was able to visit it, I much preferred the Spice Bazaar which was less busy and had better air quality.
All in all, I wouldn't recommend taking a tour that includes the Grand Bazaar during the Summer but stopping in on your own time for a few minutes to take in the history of the space is definitely worth it.