Philippe's place was honestly the perfect way to experience Quebec City and I've stayed previously at the Chateau Frontenac.
It was very stylish, well decorated, just like the pictures and very clean. The location is fantastic too as it is in a great neighbourhood (Saint-Roch) that has idyllic walks and wonderful restaurants, bars, wine stores and fromageries.
Old Quebec is about a 20-25 min walk (or a short cab ride) which is worth doing from time-to-time, but honestly I preferred going around this neighbourhood more.
I'd highly recommend and would stay here again.