Loz,
Not quite right IMO. Nobody has the right to take any of my pictures or your pictures no matter where they are posted.
As I said - if the guy had asked then I would have said 'OK' but to be honest the first picture, which is our place, gives a very false impression of the actual rental property.
As for the water marking. I think they have a cheak putting that on a picture that is not theirs. A bit like me adding my name to a Picasso.