Drop in the photos for a new listing. You get web-sized copies with the Home Finder Bangkok logo in the bottom-right corner, with the same file names, ready to upload to Bunny.
Keep the clean originals. Save the photos you dropped in (without the logo) in the listing's Google Drive folder. Only upload the watermarked copies to Bunny.
Upload new photos with no other watermark on them, so each photo carries just this corner logo.