Claire's apartment is an absolute gem in the heart of the Latin Quarter. We stayed for 3 weeks and loved it.
The apartment is spacious (for Paris!), everything was clean, the kitchen is well stocked and there is lots of beautiful light that comes through the large windows in the lounge and kitchen.
The location is brilliant. It is a 5 min walk to the metro which runs every 2-3 mins and takes you very easily to the Eiffel Tour, Louvre, Notre Dame etc. It is also a 20 min walk to the Notre Dame and from here you can easily access St Germain, Marais, Saint Chappelle etc. Closer to home is the Pantheon, Marie Curie centre, Luxembourg Gardens and the wonderful Mouffetard market which is really fun to visit at the weekend.
On your doorstep are a few great restaurants especially L'arbre de la cannelle - excellent quiche and crepes and warm, friendly staff - and also Le Jardin des Pâtes which offers homemade pasta using alternative flour options. The Jardin des Plantes are gorgeous gardens for exercising or just chilling with a book.
Claire is an excellent host with great communication.
I can't recommend this apartment and location highly enough!