Had some issues. Cleared up pretty quickly. Even though some things were troublesome, response time was excellent.
Beware if there are lots of people in your group there are only two sets of keys. And we were never shown a way to let other members of our group into the building from inside the apartment —which meant that every time someone arrived (without key) we had to meet them downstairs at the door to let them in. I’d say the place is ideal for a large family gathering traveling together.