My interpretation is a picture of a bedroom in a bedroom. Van Gogh liked it best out of all the paintings in his room when he came out of hospital when he had a psycological crisis and the injury to his ear. It is also one of Van Gogh's most loved art works to this day.
He did three versions of 'The Bedroom'. The first version painted in October 1888 while living in the Yellow House in Arles. . This painting got water damage while he was away so he made a copy in case because Theo was taking it to be remounted. then he made a smaller version for his mother and sister.