Had a lovely stay at Clothilde/Siyu's little studio in the Upper Marais. The apartment is compact, but beautifully decorated, and stocked full of everything you might need. It has a homely, personal feel and is perfect for a solo traveller or maybe a couple (it's probably best suited to young/agile guests, as the loft bed is reached via a ladder). The location is absolutely superb - with a tonne of excellent eateries, shops, and bars nearby - and the apartment is also very well-connected via public transport, with a metro station just a minute away. The only downside is that it can be noisy (especially on the weekend at nighttime), but that's only because the location is so outstanding, surrounded by vibrant venues - so pack earplugs if you are a light sleeper. Finally, Clothilde was warm, welcoming, responsive and easy to contact. I would definitely stay here again.