Many-to-many relationship linked through an entity table

Restaurant.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Restaurant extends Model
{
    public function reviews()
    {
        return $this->hasMany(Review::class);
    }
}

Review.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Review extends Model
{
    public function restaurant()
    {
        return $this->belongsTo(Restaurant::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

User.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];

    public function reviews()
    {
        return $this->hasMany(Review::class);
    }
}