<?php
/**
 * Template Name: Single Rooms Template
 *
 * Front Page.
 */

get_header(); ?>

<?php
    global $post;
    $slug = get_post( $post )->post_name; /*sets the SLUG Variable, which will be matched with the attachment's meta*/
    $args = array(
                'post_type' => 'attachment',
                'post_status' => 'inherit',
                'post_mime_type' => 'image',
                'posts_per_page' => 10,
                'meta_key' => '_room',
                'meta_value' => $slug
    );

    $loop = new WP_Query( $args );
?>

<h1>PAGE NAME = <?php echo $slug; ?></h1>

    <div id="primary" class="content-area">
        <div id="content" class="site-content" role="main">


        <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>

        <img src="<?php WHAT_GOES_RIGHT_HERE(); ?>">

        <?php endwhile; /* end of the loop.*/ ?>

        </div><!-- #content -->
    </div><!-- #primary -->
<?php get_footer(); ?>