Stayed for two nights on our annual ski trip, and its the nicest home we've come across so far. The house is very new, nicely decorated, spacious and fits eight people comfortably. The owners have also gone above and beyond with equipping the home with entertainment great for the whole family, with a variety of boardgames, books and a sit-down arcade machine.
The only thing that I will point out though is that the second car spot can be a bit harder to access if you drive a bigger car. Extra linen, although not necessary as the heaters are turned on, would also be nice to have in the colder months.
Located right by the lake and the town centre, we were extremely pleased with our stay at Heidelburg 3.