At first glance, Anne describes her husband, John, as careful and loving. Aside from this, is there another perspective?

As the story begins, readers take the first-person narrator's statements at face value, but when they learn that she is being treated for mental health issues, they should realize that she is an unreliable narrator and that her words must be evaluated critically. The statements the narrator, Jane, makes about her husband provide excellent examples of both dramatic and verbal irony. Dramatic irony occurs when the reader knows something that a character doesn't, and verbal irony occurs when the words mean the opposite of what is stated.
One early clue is, "John laughs at me, of course, but one expects that in a marriage." This tips us off in the fifth paragraph that the narrator's husband doesn't always respect her. After explaining how John denied her choice of a sleeping room in the "vacation home," Jane states, "he is very careful and loving," which readers might question based on his actions just described.
Later she relates an incident where she pleads to visit her cousin and his wife, but John denies her request. Yet she still says, "He loves me very dearly, and hates to have me sick." He brings her to her room, gives her a pep talk, and reads to her. From his actions, readers can infer that he is not intentionally malicious, yet he takes a very paternalistic and controlling approach with her. We suspect that he is also embarrassed and does not want others to see her in the condition she's in, which is probably one reason why he took the place in the country.
In the following section, we see that their marital relationship is worsening. Jane writes, "It is so hard to talk with John about my case, because he is so wise, and because he loves me so." Her inability to express her thoughts to someone is making her worse, but John, being a doctor, is so convinced of his own approach and also so embarrassed by Jane's "nervous condition" that he isn't giving her what she needs or allowing her to speak her mind.
As the story progresses, Jane writes, "I am getting a little afraid of John." This the reader must take as Jane's growing paranoia and not a sign that John is being intentionally cruel or would physically harm his wife. She states that he asked her many questions about not sleeping at night, but by this time, she says he "pretended to be very loving and kind." We doubt her suspicions here because she attributes his actions to the influence of the wallpaper. When John faints at seeing Jane's final deterioration, we know that he is seriously concerned about her and wants her well.
The narrator's perspective changes from believing John is loving to being afraid of him, reflecting her worsening mental state. By the end of the story, the perspective readers have on John is that he is loving but misguided.