Twelve-year-old Meredith and ten-year-old Macy feel like the luckiest girls around. The Ivy Hotel in Dublin is old, beautiful and beloved, with a tight- knit staff that feel like family, and they get to call it home.

Meredith and Macy's mum is the General Manager, and their modest apartment is tucked away in a corner, but it has lots of perks. The girls make friends with long-term residents - like Colin, the quiet little boy who plays piano, and Agatha, the eccentric older lady who stays in a plush suite with her dog, Milo.

The girls love spying on fancy events, sneaky treats from the restaurant and knowing all the secret stairs and corridors that guests never see, where the staff move around invisibly, making sure everything runs like clockwork...