Well, I made the mistake to assume this was just someone renting out their spare room, but far from it. The house looks like it has been converted to fit as many AirBnB guests as possible, I think there are more than five rooms that Frank is renting out (including one under the staircase, which reminded me of Harry Potter...). Therefore, you'll run into new people every day, and the two bathrooms can be quite dirty. In general, the common areas are fairly run down and could need a renovation and deep clean. The heating was also not working and Frank only provided a cheap electric heater, so I wouldn't recommend staying here in winter if you get cold easily (lowest temperature the thermostat in the hallway showed was 13°C)
On the plus side, Frank seems like a nice fellow and it's indeed a fairly artsy space and garden. It's also good value if you're just looking for a place to crash for a short time and you want to have a private room rather than go to a hostel.