Floor cleaning is one of those tasks that never quite feels effortless. Spilled coffee in the kitchen, crumbs under the sofa, pet hair in every corner – you get the picture. But Dreame’s L40s robot vacuum series aims to make that daily slog a little less of a chore. Across three models named the Ultra, Ultra AE and Ultra CE, the brand combines thoughtful engineering with practical design, offering all the features you’d expect from a high-end smart home set-up, but at various levels to suit different lifestyles. Kids,...