I didn't have major problems with the housing, even tho I can name some minor ones like: awful internet, some things, especially in the kitchen, were not clean, kitchen semi-equipped, etc.
The communication before the stay is not great ( you have to call the hotline and I only was answered by a good english speaker once) but they were fast to claim that I damaged some drawers doors and asking for a refund, that I state we didn't damaged it because we never even openned it.
To conclude, our stay wasn't bad at all, but this refund request to a thing we didn't even did is unethical.