Our main requirements were 1) central location, 2) comfortable sleeping for four, 3) two bathrooms. Check, check and check. This apartment exceeded our expectations. The view of Notre Dame, the cleanliness, easy access to the Metro, walking distance to lot of interresting attractions, nearby grocery store, a really good small restaurant right beneath us (and a larger one not so good). Once we lugged our suitcases up the seemingly endless stairs, those steps were not so daunting for the remainder of our stay. Tanguy, the charming host who met us outside the building as we arrived from the Metro, was truly a vacation-saver for us! It was our grandchildren's spring break and their first trip to the continent. Grandson's luggage was lost. As our French language skills are "non bon", Tanguy took charge of the problem immediately and made it his problem. We could not have handled it on our own -- at least, not without much consternation and aggravation. It was a service beyond what the contract promised, and we are grateful!
Back to the apartment. The bathrooms were clean and modern with excellent water pressure. An added bonus was the washer and dryer so that we did not over pack. The kitchen was well equipped with both large and small appliances and plenty of utensils, etc. There was lots of natural daylight in each room. The two bedrooms were well separated from each other. We did not watch much tv, but the tvs were good and it was fun trying to understand French. The heating/air conditioning system was good. The bed linens were excellent. The beds were comfortable.
We did not have much down time, but when we did, our favorite thing to do was watch the "show" from our windows. There was always lots going on outside.
This was our first time to rent an apartment while traveling. It will not be our last.