Location, location, location! Sunny Loft sits in the perfect location with everything so close together and easily reachable within walking distance. There's a square just one block from the apartment building with lots of cafes for a quick chocolate con churros snack or breakfast, restaurants and bars, supermarkets (good for stocking the fridge). Puerta del Sol is within a 10min walk, Plaza Mayor and Mercado de San Miguel, the historic Botin restaurant is just a stone's throw away, you'll be surprised how close they are (maybe within 5 mins)...it an easy walk, you can't complain! La Latina station was another short walk too. We enjoyed a nice Flamenco show at a taberna and a traditional Spanish dinner located along a small alley in front of Mercado de San Miguel and walked back to the flat.
Kristian's loft flat was really comfy, clean, has a small kitchen and bathroom but very efficiently laid out, a nice view from the balcony facing a quiet street at night. Highly recommend!