First, Mark is an excellent host, full stop. He booked me with less than 24 hours to check-in for my work trip, was extremely communicative, flexible with check-in and check-out times, gave good local tips, and was overall just a really great guy.
Second, this duplex is very nice. It was spotlessly clean, has modern high end appliances, plenty of space and light, and even a small outside terrace. It'll be hard to beat the combo of host, location, and quality of this property.