The location is superb...close enough to the Notre Dame to hear the bells ringing inside the apartment.
It's perfect if you're looking for late night music. There's a Jazz club and a piano bar just 20 feet away (across the alley) with live music all night until 4am with no cover charge! FANTASTIC!!!!!!!
There are some excellent restaurants in walking distance but also beware of the tourist traps. Yelp it first as no one should have a bad meal in Paris!
The Heloise was clean, comfortable and well appointed. It's perfect for 1 or 2 people.
I hope to come back!