Hi all, as per the title, does anyone know how to make a complaint to BA about a hotel booked as part of a BA Holiday?

I have seen the link below, but this looks more like complaints for flights, as opposed to a hotel:

https://www.britishairways.com/travel/custrelform/public/en_gb

Also, I have photo evidence which I am keen to submit as part of the complaint. If the above link should be used to make a complaint about the hotel, the link suggests I can't submit these photos as part of the complaint.

Can anyone suggest the best way to proceed with the complaint to BA, which also allows me to submit the photos?

Many thanks in advance.