We stayed 2 nights en route back to Cape Town from an overseas holiday.
The rooms are tastefully furnished with comfy beds, free WIFI and a flat screen TV with DSTV. Our family of 3 was accommodated in 2 adjacent rooms in a small corridor of only 3 rooms which was perfect. I really don't think all 3 of us would have fitted into 1 room as they are quite small. There is underfloor heating which was necessary in the cold winter temperatures and we could have done with electric blankets on both sides of the double bed. I didn't notice any air conditioning for summer. Breakfast was varied and delicious.
The location of this guesthouse is very convenient to Rosebank shops and the Gautrain station - about a 15-20 min walk. If you have lots of luggage you may want to consider asking the guesthouse to book a cab as the route feels longer with luggage! Without luggage it is an easy walk.
We were treated kindly and efficiently and they happily gave us a late checkout on our last morning as I wasn't feeling well.