"I'm no interior decorator, but just I have a feeling that plastic plants in the bathroom... probably not a good idea"

Kyan Douglas is suggesting that plastic plants in the restroom are not an excellent concept. He is indicating that he is not an expert in interior decorating, but he senses that plastic plants in the restroom are not an excellent concept. This could be since plastic plants are not visually pleasing, or due to the fact that they are not appropriate for a damp environment. It could also be since plastic plants are not as natural looking as real plants, and therefore do not fit in with the general style of the bathroom. Whatever the reason, Kyan Douglas is recommending that plastic plants in the restroom are not a good idea.