Pretty much perfect vacation rental. The house is stylish, very simple and clean, and perfectly situated on Clifton (this is our third time renting a Clifton bungalow, and our favorite).
We were a group of 3, and the house was very comfortable - and would be perfect for about 4 max, in my humble opinion. Maybe a couple of kids. The bedrooms are all really nice, with really nice en-suite bathrooms, it's more that there's not massive lounge areas. The pool area is in a separate zone, and one of the world's most amazing beaches at your feet, so there are opportunities to spread out.
Also note that while Clifton is close enough to the city to make it your base for exploring, you will have to work for it a bit more, so if you are looking to go out a lot, consider spending a few days in the city center beforehand. For us it was primarily about escaping to Clifton, walking the beach several times a day, hiking up Lion's Head, and venturing out further every few days. (Best food shopping: Woolworth's Sea Point, Giovanni's Green Point or the Spar in Cape Quarter Center in De Waterkant).
We could have stayed here a month easy. Can't wait to go back!