Absolutely amazing stay. This place is the North American traveler's dream. Kind of like a mini fortress. Very safe and comfortable. Even had some North American wall sockets which helped me spread out my phone and laptop. For a single girl traveling solo for an extended period of time, its hard to ask for anything more. Convenience, accessibility and communication at your fingertips. I locked myself out on the second night very early in the morning and was able to call and gain re-entry within minutes. Super cool area, very trendy "Miami Wynwood" like. Tons of great cafes, shops and restaurants close by. Fuencarral shopping strip right outside the door and only a 25 min walk to Salamanca and Gran Via. My one piece of advice would be to upgrade the pillows and mattresses on the beds. For the value of the Sonder brand, they could be a LOT more comfortable. Couch included ;)