I'm not letting a lumpy guest bed ruin Christmas – this is how I'm making the mattress in my guest bedroom more comfortable

A white bedroom with panelled walls and white bedding.

As Ideal Home's Sleep Editor, you might think my house is kitted out with the best sleep setup going.

However, despite testing the best mattresses on the market for a living, the one thing I definitely haven't given enough attention to is the sleeping arrangements in my guest bedroom.