Final answer:
The given text does not contain any reference to Ulla's likes or dislikes about the bathroom, nor any criticisms she may have, thus an accurate answer cannot be provided.
Step-by-step explanation:
The question asks what Ulla dislikes about the bathroom and for any critical points she may have. However, based on the provided text, there is no mention or indication of Ulla's feelings or criticisms about the bathroom. Instead, the description of the bathroom appears to be positive, highlighting a removable roof for enjoyment of a shower bath. The provided extracts do not contain any content directly related to Ulla's preferences or criticisms of the bathroom. Therefore, without additional context or information about Ulla's opinions specifically related to a bathroom, an accurate answer cannot be provided.