Unfortunately you can only give 5 points; Anne-Claude and Pascal, the hosts, deserve at least 6.
A tastefully decorated bedroom with adjacent private bathroom, a wonderful spacious living room with more books on Paris you can ever read in your life - and a shared kitchen where a better-then-French-breakfast (self-baked bread and yoghurt, fruit, coffee and confiture - served with a lovely chatter about art, French politicians and the marvels of Paris.
Pascal also speaks fluent German - with a loveley Swiss-Alsatian accent - and will give you a short introduction to the quarter (Xième Arrondissement). The place is very close to the Gare du Nord, close to the Gare de l'Est - and on the lively Rue du Faubourg St. Denis - but you'll will hardly find a more quiet place in the centre of Paris.
Ann-Claude and Pascal will recommend some of the very many restaurants in the area. And maybe even acommodate your bikes safely, which they did in our case.
Communication was very easy. Briefly: one of the best AirBnBs we ever stayed at - very highly recommended. And a big THANK YOU to Pascal and Ann-Claude.