Snuggly fits crib size mattresses. It was homemade for our girls. They have out grown it. Its real wood. Its the perfect height for a queen size bed if putting it against it. The steps are high and might require a small stool if its not against the bed. Its about 5 feet tall at the highest point. About 51 inches long. About 30 inches wide.
Its was designed to go against a wall and parent bed. Thats the safest way. But as the girls got older they had it away and did fine. Mattresses included.