Christoph and the whole staff at Suites Viena made my stay very confortable and enjoyable. Location is great two minutes walking from Plaza de Espana and Gran Via, with most areas reachable at walking distance (Malasana, Chueca, Palacio). Rooms are clean and perfect for a two-weeks smart-working staying like mine. As an host you can also benefit of the hotel gym at no additional cost and have 24h receptionist support.
I would definetely recommend staying at Suites Viena Apartments and Christoph place!