Where to go near covent garden

[Kblackwell]

Hi I'm not from London but will be visiting on Sunday. I'm dropping my sister at pineapple dance studios and then have 3 hours to kill with my 8month old son. Does anyone know of a cafe with young child play area or an indoor play centre at covent garden or a short tube ride away. Any help will probably save my sanity :) thanks

There is a children's play area in Drury Lane - it's outside though! But think the weather forecast is for mild weather