Az’s place is a lovely comfortable flat. The hosts are very thoughtful and kind, and provided all that we needed, including fresh milk in the fridge (important for English and their tea!), cereals, eggs and condiments.
It is very close to famous Montmartre sites such as the wonderful Sacre Coeur (a 15 minute walk) and about 15 minutes on the bus to the Louvre, so central Paris is very accessible. We mainly used buses to get around but there is nearby metro too. The hosts gave us lots of information on local shops and we had at least three boulangerie within 5 minutes walk. There is also a bar across the road for those who prefer to go out to eat or for breakfast, and lots of local cafes, shops and restaurants.
Things to consider - the apartment is on the 4th floor, accessed by stairs. We enjoyed the exercise- we had a LOT of patisserie to walk off. The stairs are carpeted and well lit so shouldn’t put anyone off but they could be a problem if you have reduced mobility.
The flat is easily accessed from Gare du Nord with a direct bus route, or 30min walk.