We really enjoyed our stay at the cozy little apartment in calle Princípe. Great location if you like us love art museums and being within walking distance of most sites. The apartment is smack in the middle of the food and bar district Huertas. It is a lively neighborhood so do not expect it to be quiet at night. Did not have trouble sleeping though, the window-doors are pretty soundproof and the bed comfortable. Our hosts were friendly and helpful, and let us leave our luggages after checkout so we could have a last stroll in the beautiful Parque de El Retiro before heading to the airport. Would definitely consider coming back.