Hélène’s place was awesome for my first time in Paris. It's 5-10 minutes away from the Eiffel Tower and I went there two nights just before I went to bed just to stay there for a couple of minutes, I loved it. There is also a bunch of places to eat and a super well placed carrefour 5 minutes away for some groceries if you need it to save a bit of money in Paris :). The location is not huge, as described, but I was very comfortable, one person should not have any problem being there. The 6th floors are only a problem if you forget your phone or wallet as I did! if you don't then it should be more than fine to do it once a day when you come back. Shower on the 3rd floor is nice and warm water it's a nice way to rest from all the walking in Paris. Loved the place!