We stayed in this hotel on our last night in Namibia. It is very conveniently located for the airport, but not so much for the city centre. We didn't attempt to, but I don't think you'd be able to walk. Also finding the entrance off the main road can be a bit tricky, so drive slowly as you approach.
The main highlight for me was the absolutely stunning view when you first enter the reception. It's almost like being in Italy and overlooking valleys covered with vineyards. They had a number of people arriving for sunset just to enjoy a drink at the bar, not staying at the hotel. The have a nice pool on the terrace as well with the view.
Rooms were large and comfortable. Unfortunately there was a curious smell in our room from the drainage. But I know our friends in the other room didn't have that same problem and I'm sure it's fixed by now.
I think there are many b&b type places in Windhoek. This is definitely a boutique hotel rather than b&b.
Food was delicious. But similar to most places in Namibia, it was a fixed menu rather than a la carte.