We receive some of the hotel information from Google. They recently raised their prices enough that I can no longer include all of the information for every hotel without a significant raise in the subscription price, which I'm not willing to do.
In the meantime, I've been working hard on an overhaul to the app that will enable the ability to quickly implement new features. One of them will be to allow everybody to update the rest of that info (hotel pictures, address, etc).
I don't have a timeline on that, but this latest release opens the door for me to start working on my todo list and this particular issue is right near the top of my list.