Source: http://acapulco.locanto.com.mx/ID_339579559/SERVICIO-DE-HOSPEDAJE-EN-ACAPULCO.html
Not citing the source of photos, or using copyrighted photos, is plagiarism. Here is a post on why this is bad, and here is how easy it is to find allowed photos.
If you cite the source of a photo you want to share, please the tag #photo instead of #phototaphy. Use the tag #photography for photos you take yourself.