Sarah's place is in a superb location - quiet but a short walk to the main tourist areas - and the car parking is an added bonus if you have a car. As 2 couples, the house is set up very well with one en-suite room and a family bathroom close to another bedroom. We were only staying one night between a driving trip of Scotland and heading back to London, so we didn't use all the amenities, but the house was well equipped.
There was an unfortunate incident involving a lack of hot water and too much too'ing and fro'ing with the property management team, but Sarah was very attentive and we were provided a 30% refund as a result.
On balance, I would recommend staying at Sarah's place and would stay again myself.