Sometimes I tend to be a bit sceptical reading so many good comments - but it's true. Myryam is a really really caring and friendly host, appartment is 10min from Gare du Nord, easy to find, also 2min from a train-station, trains are coming every 3 to 7 mins.
Tour Eiffel is like 25min away from door to door, Louvre 20min etc. Easy.
And about Paris in general but Myryam would tell you also: take care of your bags/mobile devices in some parts of Paris, thieving is a thing. (I didn't lost anything but they tried)
All in all it was brilliant stay, thank you Myryam!