This is a fantastic place to stay in Paris, as it is super centric, really easy to reach from Gare du Nord (1 metroline in 3 stops) and on the edge of le Marais, so a not too crowded neighbourhood, but on walking distance to all the nice streets in le Marais.
The appartment has all the basics you need for a few days in Paris and Axel is very friendly and helpful in his communication.