Checkbox filed not filtering form acf fields

Question

I have used ACF checkbox fields. Now I want to filter query is this checkbox field. Then I am trying to search from the front end. But it's not showing any result. Field meta_key is cotf. acf fields screenshot 1

acf fields screenshot 2

<form action="" id="" method="POST">
<input type="checkbox" name="ap_features[]" value="air_conditioning">
<input type="checkbox" name="ap_features[]" value="washer_connections">
<input type="checkbox" name="ap_features[]" value="refrigerator">
<input  class="btn btn-lg  btn-success" type='submit' id="" name="submit" value="SEARCH">
</form>

PHP

<?php
    if(isset($_POST['submit'])){
        $afeatures = $_POST['ap_features'];
        $args = array(  
            'numberposts'   => -1,
            'post_type'     => 'apartment',
            'meta_query'    => array(
            'relation'      => 'AND',
                array(
                    'key'       => 'cotf',
                    'value' => array($afeatures),
                    'compare'   => 'IN'
                )
            )
        );
    }
?>

I have also trying this code but its not working:

$meta_query = array('relation' => 'OR');
    foreach ($_POST['ap_features'] as $value) {
      $meta_query[] = array(
      'key' => 'cotf',
      'value' => '"'.$value.'"',
      'compare' => 'LIKE'
      )
    }
    $args = array(
      'numberposts' => -1,
      'post_type' => 'restaurant',
      'meta_query' => $meta_query
    );

Answer 1

your code should be like this.

if(isset($_POST['submit'])){

    $args = array(  
        'numberposts'   => -1,
        'post_type'     => 'apartment',            
    );
    $afeatures = $_POST['ap_features'];

    if(is_array($afeatures)){
        $afeaturesArr = implode(",",$afeatures);

        $args['meta_query']= array(
        'relation'=>array('AND',
            array(
            'key'       => 'cotf',
            'value' => explode(",",$afeaturesArr),
            'compare'   => 'IN'
            )            
        ));
    }
}