Gorgeous and very spacious professionally-managed and outfitted top-floor walk-up dual-level in central Paris with great wifi. My brother and I stayed here for several days, working remotely and exploring Paris. Would recommend and would come back. The entire building is similarly furnished flats.
The two downstairs bedrooms are spacious with high ceilings. The top floor is nice and private but with low ceilings. I'm 6'2 and I elected to stay downstairs as I had to crouch to get around the top floor. It's a beautifully romantic top-floor loft though, so your short girlfriend would love it :)
Check-in was easy through the property management company that helps the host. As others have noted, this is a dual-level loft apartment at the top of a Hussmanian building, so be prepared to climb stairs! Check-out was seamless as well.
No early check-in or bag storage. We solved this by spending a few hours at Brasserie Dubillot, which were kind enough to store out bags in their storage room while we had an incredible extended lunch. Highly recommend this place just down the street.
The apartment is fairly quiet - thick windows and top-floor set back from the street. The beds were very comfortable and I slept well. There is an AC unit in every room - they're effective but very noisy so we would run them while we were out and about, and leave them off at night. This worked fine. So nice to come home to a cool and dry space after humid and hot Paris!
The WiFi is a local fiber provider and worked great, 300Mbps asymmetrical. This was great.
We used the in-unit washer dryer to do laundry. This worked great. Like all Parisian apartments, it's a small unit so only do a small load at a time. Both the washing and the drying features worked great. Things came out clean and dry and I packed it right back into my luggage.
The bathrooms were nice and there was plenty of high quality towels provided. One slight note - the tiny little extractor fans in the bathrooms does very little, so you get a lot of steam and you get some smells drifting into the kitchen if your brother aggressively uses the facilities after a big night out.
The location is pretty good. There's two subway stops in walking distance which will take you everywhere. The street itself is a tad crummy, with a sex toy shop just down the street, but it felt perfectly safe just not the most glamorous part of Paris. We also stayed in the 7th Arr. which was less interesting but a bit more classy.
One slight wrinkle - there was construction happening throughout the rest of this building. This had some noise in the mornings and we negotiated a hallway with wet paint or active construction a few times. I assume this won't last very long. We peeked into a few of the other units, and they all looked identically furnished.
All in all, I would stay again and recommend especially to larger groups - three very spacious rooms that could comfortably sleep 3 couples.