We stayed at Irene's apartment for one night but would have happily stayed longer. The apartment was super clean and recently renovated. The location was excellent (slightly off the main street so it wasn't too loud but you could still easily reach everything by foot). The internet speed was also very good, which would make remote work possible too.
It is worth mentioning that the "self check in" is not the conventional type with a lockbox. In this case, you need to let Irene know when you are infront of the door and she will unlock it remotely. This worked fine, we just had to give her a call when we got there.
I would recommend the apartment and would also stay again.