French 3rd !? You can do it. It's kinda tough the 1st day with the luggage, but usually the manager/landlord will help you.
Once we rented a "4th floor" walkup smack in the Gothic Quarter of Barcelona. When we arrived we realized what the French call the 1st floor, it's not even a thing. It's an Entresuelo. Wait, that's not all. What the French would call the 2nd floor, it's still not a thing. It's the Principe. You finally, with your luggage, climb to the 3rd. The sign on the wall says "1". Discouraging, no ?
Yes, we actually lived on the (French) 6th floor.
We actually got used to it, but if we came home from the supermarket and realized we had forgotten one gracery item, we were not inclined to jump up and go back to get it.
There were unexpected incredible advantages:
We had a big terrace with a view of all the roofs of the old town, where we had all our meals, plus from whichp we could see the drug deals down on the backstreet off Escudellers. I swear I have seen the parents or grandparents of the dealers already dealing there in the 1970s.
Then there was the night when our dinner was serenaded by the Rolling Stones live from Montjuc. For one moment, the entire Gothic Quarter was singing "Miss you" chorus in unison : "Oo oo oo oo oo-oo o
o oo oo oo oo-oo oo".
So it was a 6th(or 7th) floor walkup. It was wonderfully minimalistically decorated by the gallery owner landlord. It was not dirty but quite dusty in places. Not the ideal rental for most people, yet it was one of the rentals that gave us the most outstanding memories.