Hawksmoor - Spitalfields

Liverpool Street aparthotel with one-bedroom apartments for four, a full kitchen, a laundry room, and a travel cot and highchair.

Kids' swim sessions in the heated indoor pool and cupcake decorating at afternoon tea.

Historic fortress with the Crown Jewels, armor and tower stories, best for kids around 8 and up.

Foam bricks to build with, stories to invent, and a mini museum just for under-threes.

A proper play room, and rice balls toddlers actually eat, looking out over the canal basin.