Since you are in a private home, @Ilta0, it would be best to gain approval from the host to include interior pictures or videos. Unlike a hotel, this is a private residence. You and I would have never thought that this would be an issue, but I have seen postings from hosts in which there was abuse by guests in taking pictures and videos. There has even been abuse of guests shooting pornographic films in host's homes!! Who knew?
Perhaps the hosts is just being overly-cautious and you can provide some comfort to them. However, basically, the host can have rules about their space without violating any Air BNB terms.
Good question!