The Posada del Peine is a lovely botique hotel, with an unbeatable location in the capital: a few meters away from Plaza Mayor in Madrid. It is of the Petit Palace chain and has four stars. It is supposed to be the oldest hotel in Spain, since the building was an old inn in the year 1610, renovated in 2005 to house the current 71 rooms hotel.
I definitely liked it and and I thought it was tastefully decorated. The house preserves the original structure and in the decoration they combined country elements like brick walls, wooden beams and forged handrails, with contemporary elements (crystal, design and white leather armchairs, modern lamps, light and straight lines in the furniture, etc.).