It is a great choice for a bathroom, bedroom, kitchen ... The Fourth shelf size about 12x4.13x2.95 inch, the Fifth small wall shelves size about 10.67x3.74x2.48 inch.
A narrow bedroom will usually have a compromised walkway either side of the bed, so prioritise wall-mounted features – wall lights, shelves, large mirrors – wherever possible. In a small bedroom, ...
Having some open shelving for a book or ... should never be left bare in the bedroom. Hardwood floors might be popular, but I'd consider installing wall-to-wall carpeting in the bedroom.