We just returned from three weeks at Sarah and Mark's flat and had a fantastic experience. The flat was large and comfortable with a beautiful view of the gardens. We arrived earlier than when the flat was available and they allowed us to keep our luggage at their place and then Mark called to let us know when it was available. They were very helpful when we needed anything. The location was perfect and was close to pubs, grocery stores, charity shops, the train, bus stops. It is possible to walk into the city but the Bristol bus service is an easy way to explore. I would highly recommend staying at the flat.