I didn't think it would bother us but previous comments really are true - the lack of air conditioning is a real problem for a hotel of this class. We were constantly opening the windows (and one night slept with completely open windows onto a shared balcony) and that was in mid-September. I can't imagine what the summer must be like. WLAN/Wi-Fi doesn't reach into the upper floors and the parking charge really is exorbitant for rooms costing over €200 per night anyway. The Spa area is fairly modest, despite its claims. And 34°C spa water......maybe try 24°C at the most....?
Wonderful location, smart design hotel, staff were very welcoming and accommodating (particularly the night porter when we arrived unannounced at almost midnight the night before we were due to come!) Breakfast was excellent.