There is just one small thing...<br/><br/>75% of the world, the lowest floor of a building is referred to as the ground floor and the next one up is the first floor. Only in the USA and those parts of the world heavily influenced by the USA is the lowest floor called the first floor. As we are in New Zeeland, it would be ground and first.<br/><br/>However, to simplify matters, I would prefer people to say "upstairs" and "Downstairs", please?