如何用英语翻译这句话？

There is a room which is 150metresquare on the first floor.

The First Floor has a room of 150 (平方米的单位m上面一个小2)

There's a room of 150 squaremeter on the groud floor

there is a room with a area of 150 square metres on the ground floor

On the first floor,there is a room with 150 square metres .

there is a room with 150metresquare at the first floor.