Ginevra Weasley's bedroom

Ginny's Room
Ginny's room is first described in the last Harry Potter book, Harry Potter and the Deathly Hallows. It is described as small, but with a good view of the garden in which Harry, Ginny, Hermione, and Ron had played Quidditch many times.

Decor
Decor in Ginny's room is described vaguely, but it does say that a Holyhead Harpies Quidditch-Team poster is hanging on her wall, and that she has a desk facing the window.

Location
It is described in the book that Ginny's room is on the first-floor landing. Obviously it is below Ron's, as it is written in the book that Harry, Hermione, and Ron were on their way up towards Ron's room (which is located in the Attic) when Ginny's door flew open.