Go for a hearty lunch and some shopping at Souq Waqif. There is quite a good collection of restaurants to choose from. The kids will love the setup of a traditional Arabian market and get to experience the food and traditional lifestyle of Qataris. The architecture has an authentic Qatari vibe and a great place to shop for souvenirs!
Many days can be spent exploring the marketplace. Some of the main attractions to visit include the gold souq, falcon souq, horse stables, bird souq, camel pen, and local art. The shops include many trinkets, spices, varieties of dates, Oud special incense, which are popular purchases. In Doha, hotels can be quite a lot in this area. You can try the likes of Banana Island Resort Doha by Anantara as well.