Ask HN: Are the insides of Airbnb listings being commercialized?

I recently stayed with Airbnb and had a fun conversation with the host regarding his past experiences. Does anyone know, or has anyone seen listings being used to promote products or services?

I guess the examples would be product placement, bathroom samples, posters, painted wall murals, magnets of real estate agents, fashion, etc.

I love Airbnb but my gut says this is inevitable and I'm curious if anyone has seen this happening yet...