We loved our visit to Cape Town and found the people friendly and welcoming. This apartment was OK and will be a perfect location for some, but being there for seven weeks and with the nature of our travel (digital nomads) it didn't suit us in all ways. This apartment would be perfect for visitors of a day or two up to a week or so who want to hit the main sights, enjoy the bars and restaurants on Kloof St, aren't renting a car, and don't mind a very firm mattress. If you want to be in the heart of the bar and restaurant scene in Cape Town, this is definitely the location!
We did have a few issues with the apartment, however. We stayed for seven weeks and while the host was responsive, friendly, and helpful, the property management company was difficult to deal with. They skimped on many things, such as only providing a single towel for each of us, no change of sheets, and virtually no cleaning products whatsoever (for a seven week stay).
As to sleep quality, the mattress is probably the firmest I've ever slept on. I can't emphasize enough how firm it was. As someone who prefers a soft mattress, this made my stay rather difficult. There's quite a bit of street noise at night, often late, which was sometimes a problem for my wife, though I sleep with ear plugs and it didn't bother me.
I definitely would not recommend renting a car if you stay here. It was often challenging finding a place to park, sometimes circling the area for ten or fifteen minutes before finding something within a few blocks. Plus we had all the hubcaps stolen on one occasion and on another someone stole a windshield wiper.
The bedroom has air conditioning, which is comfortable and works well. But note that there's no AC in the living space. We were there in summer (Jan/Feb) and it got uncomfortably hot during the day. The host did provide a good quality fan to help with this. However, I could only recommend this apartment to someone who is planning to be out during most days in the summer. As digital nomads working out of the apartment this was often uncomfortable.
Be aware that all of South Africa experiences periodic bouts of rolling blackouts in electric service ("load shedding"). There are no emergency lights in the building and if you are caught returning to the apartment without power at night navigating the stairwell can be dangerous. No torch/flashlight/lantern was provided, which would have been useful.
If you're here for a week or so on vacation without a rental car then this is a great, central location with easy access to hip bars and restaurants, Table Mountain/Lion's Head/Signal Hill, and short uber rides to the waterfront. The building feels very safe and the neighbors were always friendly. Plenty of Cape Town is walking distance and anything else you'd want to see in the city itself is a short uber ride away.
Sadly I wouldn't recommend it for long term stays, particularly in the summer. A new mattress, air conditioning in the living area, some kind of off street parking solution, and more attention to the amenities would make this apartment top notch for just about anyone.