Amazing place, highly recommended!
Me and my girlfriend stayed in Adrian's place for a full week.
The location of the apartment in the center of "The Marais" is a major advantage: it is surrounded by boulangeries, restaurants and shops. There is also a great view to "Place des Vosges".
The apartment had all we needed for our stayed.
Adrian is a great host. He answered all our questions quickly and supplied us with good recommendations.
Do be aware the shower is a bit small for some people (I'm a tall person, 1.9m), but it is neglectable in our full experience. The bed however is comfortable and large.