Things I enjoyed: functional and complete experience, clear textual highlights of object interactions, simplified user input. Right handling of camera during UI interactions, e.g. disabled and showing mouse during reading the note. The painting addition was a nice touch.
Things I had difficulty with: The camera look around works great in Unity Editor, but has a clamping effect in the WebGL build, which makes navigation not as smooth as could be. Maybe a slight difficulty moving around the space because of the size of furniture colliders.
Ideas: To move to the next step, consider moving from the sandbox approach to a narrative with the addition of some text-based prompts to the player or audio narration. Also, given that you added pause, consider making the most out of it with some time-based mechanic. Finally, my eyesight is not great, so although text-based feedback certainly is enough for most, I always appreciate stronger audiovisual feedback when near interactable.
Very well done, congratulations! 🍎📱 Appreciate the detailed description on itchio on what to expect and how to interact! Consider adding your GitHub repo too if you would like.