Probably the sweetest city in Uzbekistan, even more so because it is compact and you can easily explore the inner walled city, Ichon Qala, even on a short stay (you need to pay an admission fee unless your hotel is located inside the walls).
Try and spend at least a night and wander around the old city in the night, admire the lights on the minarets, make plenty of nice pics! Visit the gas-light district, absolutely magnificent end eerie in the dark.
Make this your digestive walk after a dinner on the roof of Terrasse café, after your copious plov or a huge sashlik. And remember, this restaurant  is espresso territory, thus be proactive for the rest of your trip!