If you want to give your credit card some exercise, head out to Yumbo Shopping Center in Playa del Ingles. Hotels.com travelers also say the area is relaxing and has lots of nice beaches. It's also full of great shops and restaurants, so you can spend the afternoon having a wander. Splash some more cash at CITA Shopping Center, Kasbah Shopping Center, and Paseo Costa Canaria.
Why not spend a lazy afternoon at English Beach during your trip to San Bartolomé de Tirajana?