A very nice room, unfortunately an interior architect put a big cube in it. Everything is narrow. And if you are taller than 1,90 or more than 90kg you should be very careful with the ladder and the "2nd floor".
The couch is not a sleeping couch, so the flat is not recommended for more than 2 people.
The equipment in the kitchen could be more thoughtful. No dish towel, no soup plates, no dish soap, but hey, 12 wine glasses.
If you lay in bed, you are just a meter under the ceiling, you can hear every step and every word from above, so don't forget your ear plugs.
We had no problems with the check in, but it could be easier. You have to fill out an online formular, including taking selfies and copies of your ID. To get into the apartment you also need the sweet inn app. I don't know, why you can't check in via airbnb.
To tell some positive things, it was clean and the location is very nice in pretty st. Gilles. Actually I'm not niggling, but for the price there were to many compromises.