I stayed here for a few days with some friends and family. Overall, it was okay.
The flat was spacious, with nice furniture and appliances. The more permanent fixtures had seen better days, but the sofa, beds, etc. were in pretty good condition. The kitchen was equipped with a few basics (utensils, plates, glasses, a knife, and a few pans). There were only two wine glasses, so you'll need to bring your own if you have more than two people.
The location is great. Very central, with lots of cafes and a supermarket nearby. It's only a couple of minutes walk away from the nearest train station. There's a fair bit of noise from the neighbours and the school outside, but that's to be expected in a city.
The internet was very fast at 500Mbps down/up, but had a few dropouts lasting up to 15 minutes in the few days we were there.
When we arrived, the cleaner had only just arrived and said they would still take a few more hours. We tried to contact the host by message and phone to sort something out, but they weren't available. The cleaner finished up quickly for us, so we only waited an hour, but probably because of this the flat wasn't very clean. The dishes and cutlery were dirty, the flat smelled kind of bad, surfaces hadn't been cleaned, the toilets hadn't been cleaned, and there was some toilet paper with poo on it on the floor of one of the bathrooms.
Once we were settled in and had given the place a clean, though, the stay was fine.