Hostal Siesta and Go is a lovely, immaculately clean and very secure hostel. I received excellent communication and details from the staff, check in was easy and the facility modern and tastefully decorated. I was in a private room which was spartan but functional with all the helpful details. My sleep was restful after 11pm, maybe not ideal if you want to get to sleep a bit earlier after a long flight. It is a great place to do just what the name suggests, Siesta and Go, perfect first night in Madrid!