Just to be clear - it's a plunge pool that can be made hot, NOT a hot tub, that's on the property. The plunge pool is inside a pool house, and it is approximately waist deep (I'm 5'7") when standing in it. Six adults can comfortably hang out in the water, although some will either be leaning against the wall or standing in the water. You could have eight people but there wouldn't be much extra space.
We were really aware of not making any noise, which did put a bit of a damper on things. We were all in the plunge pool at 9 pm and were concerned that our talking and laughter might carry to the neighbours, for example.
The Views are beautiful, and the open-plan living area is spacious. The kitchen was great but didn't have a lot of crockery. There were no spices etc which sometimes populate an AirBnB kitchen.
The place was plenty warm though, despite what some of the other reviews said. The heat pumps worked well, and there's underfloor in the bathrooms.