Perquisite hotel stay

Since you stayed for 21 days, you have exceeded the 15-day limit allowed for the tax exemption. Consequently, the cost of the entire 21-day stay is likely to be considered a taxable perquisite in the hands of the employee, rather than just the "excess" 6 days. You should consult with your company's payroll or a tax advisor to confirm how they will report this in your Form 16.