The key pickup was at a different location, than the apartment itself. That is fine, we looked that up beforehand, and we expected that. It was a nice, 15-minute walk. But, they told us the check-in was at 3pm. We got there by 5:30pm, and they were JUST cleaning the room! All of us were just sitting there, with NOWHERE to be able to put our bags, since the ENTIRE apartment was being cleaned. We had to wait about 20-30 minutes.
There is no front desk, since it's an apartment, only an office in another part of town. When we sent an email to complain, all we were told, was "Sorry, the office is closed now. Please send your inquiry during regular business hours."
I would NOT stay here again, there are PLENTY of other options in Venice, since the entire town is pretty much built on tourism.