My partner and I stayed at the apartment for 2 nights and overall had a pretty good experience. We never met Daniel but his upstairs neighbour Lea was lovely, friendly and very accommodating and made everything so easy.
As other reviews have mentioned, the apartment is close to the train station and only a half hour walk to Grand Place, which was great, but on the other hand it felt a bit questionable and I personally didn't feel comfortable walking around the neighbouring streets at night.
The apartment was spacious and modern, the Internet worked perfectly, the bathroom was small but also modern and nice (it even had a stereo you could plug your iPod/phone into which was awesome), the kitchen was well equipped including spices etc and there was a great fold out couch which was perfect for relaxing on. The bed was comfy but we found the pillows to be much too firm. Also just a note that unlike most other Air BnB places we've stayed at, there were a lot of personal bits and pieces and clutter which did really make it feel like you were just staying at some random person's house. This didn't really bother us but it might bother others?
The apartment was also desperately in need of a deep clean as there was a lot of dust/dirt/grime which had obviously been there for quite some time e.g. the fridge, on top of some surfaces, corners of bathroom tiles etc. But having said that basic things like the floor, sheets, etc were clean.
So overall we were pretty happy, especially for the price, and would recommend.