Charlie has several listings, and my sister and I rented the second floor bedroom with the private bathroom. If you rented this room with a hostel-like setting in mind, then this place meets expectations. Check in was easy, and Charlie explained all necessary house rules as soon as we arrived. Area and apartment felt safe. The room and bathroom were clean. The room was bright and felt very private and safe, especially with your own key to lock your room. The apartment was accessible to many main attractions and sights in Madrid. Charlie was responsive to our questions.