There are thousands of royalty free photos in this site, you can use these photos for both corporate and personal use, no registration is required, a backlink to www.biophotos.com will be appreciated, but it is not mandatory.
For Hotels, basic Text Links are free, a full link is only usd$150 per
year and it gives you space for pictures, a hotlink to your web site, plus a one
or two paragraphs of text.