Sandy's place is very nice for small groups. When I went there with friends, the space was quite adequate for the five of us. The amenities provided were exceptional, as there are pillows, blankets, a lot of tissue, cooking materials, and wifi. It is also very near Donghu station, as well as a great many restaurants and supermarkets.
However, we also had some issues with the bathroom, as the floor was constantly wet (even if we didn't use the bathroom the entire afternoon and we came home to a mildly flooded floor. However, Sandy immediately came to fix the problem right away.
Overall, the staying here was a great experience that I believe everyone should try out when they visit Taipei!