Unimaginably worth the cost! For my week there Simon was almost never there, the days he was he just slept over. the little shared time I had with him exemplified that he's a very kindhearted and warm individual. the apartment is very tastefully done and neatly organised. tonnes of books if you can read french, nice Bluetooth sound system, well equipped kitchen, and he gives you towels too! there is also a washing machine and ironing board.
I would definitely stay again, the value is incomparable. At this rate (maybe even a little more) I would get a shared room with 6 people in a hostel, but I got a fancy apartment worthy of Pinterest aesthetic boards.
Stalingrad is 15-30 mins away from all the places you might wanna go to, be it Montmartre, Eiffel, or shopping at Lafayette etc
There are many food stores of different cuisines near the apartment that are very affordable and open late.
The area is not the cleanest and you will see economic backwardness, it's not the "fancy" part of Paris. But I didn't feel unsafe though I have walked alone quite many times. Generator Hostel is a small walk away as well so we must assume that the area is safe for travellers.
I found some food items that I only get in my home country at a store right opposite and some in a lane behind. the restaurant opposite called Petit Tibet was like being in New Delhi again!
The pizzeria right as you go down the building saved my nights when I came home drunk and hungry.