We (3 adults and a 2 year-old) stayed for only three nights but if it had been possible we would have never left. Every room is designed carefully and with a lot of love for detail as seen on the photos.
Although we never met her in person, Arianne was a very nice person, contact was easy and she gave us a ton of information before we showed up and also left a lot of informative guides about the city for us. The concierge was our main address for any needs? And she went out of her way to help us (she even let us leave our baby-car in her apartment because it was too big for the the original, but too small elevator).
The only real downside is the elevator in the building, one of the kind where you have to close the doors manually, and allows only space for two persons.
Would definitely stay here again.