Learn Italian: La camera è piccola.

In Italian, camera is a false friend! It usually means 'room' or 'bedroom' (often short for camera da letto). A device used to take pictures is instead called a macchina fotografica.

Why is it piccola with an 'a' at the end instead of piccolo?

Adjectives in Italian must match the gender and number of the noun they describe. Because la camera is a feminine singular noun, the dictionary form of the adjective piccolo (small) changes its ending to -a to become piccola.

How would I say 'in the bedroom' using the prepositions from this lesson?

To say 'in the bedroom', you combine the preposition in (in) with the feminine article la (the) to make the articulated preposition nella. So, 'in the bedroom' translates to nella camera.