The biggest plus of this place is definitely the view. Location is also great, walking distance within most attractions in Cape Town city center. But even as local South Africans we did not walk to the city center after dark. But taxis are cheap so that should not stop you.
Breakfast was lovely and Katrin very helpful. The shared kitchen has everything you need (couldn't find a microwave though), but if others cook you will smell it in your bedroom. Only minus was the on-street parking in a small, slightly dodgy, street.
Would definitely recommend Upperbloem, good value for money