What was good:
The host was very responsive. He answered all questions fully and quickly, with extra information and links. When I expressed my unhappiness about the unit (see "What was Bad" below), he did not argue and graciously agreed to allow me to move out within 24 hours and cancel the booking.
The gentleman, Manel, who did the check-in on behalf of the Host 9and was the 'on the ground' liaison) was very helpful, kind, responsive and accommodating.
What was bad:
The unit was dirty. For example, the bathrooms still had "residue" from previous guests, the oven was filthy and looked like various meals had been cooked in it, the microwave had food splatter, and the coffee machine had coffee drops and marks all over it. If one walked barefoot around the aprtment, your feet would quickly become black with dirt and dust. After complaining, the host did reassure us that the aprtment had been cleaned before our arrival and offered to send his cleaning team in again (but they would only be available to come 24 hours later).
Prior to booking, I had also noticed from a recent review that the reviewer had noted that various things were broken (eg. the hob and the shower handle / holder). Prior to booking, I sent the host a message and asked if it had been fixed. I was told it had been. Turns out they were still broken when we arrived.
We booked for almost 10 nights and moved out after the first night. To his credit, the host was gracious and understanding about our complaints and agreed to an early cancellations.