Complex sentence: The Library was a private charitable venture by Martha Arnold--blind herself since childhood--and it was accommodated in a small room of her house at 73 Fairfax Road, South Hampstead, London.
Split into simpler sentences: The Library was a private charitable venture by Martha Arnold--blind herself since childhood. It was accommodated in a small room of her house at 73 Fairfax Road, South Hampstead, London.