I did not have the pleasure of staying with Robert and Erica but my Taiwanese friends who did, have nothing but great things to say! The immaculate apartment, the location, the building and the amenities (including a beautiful "spa") are all first rate. (My friends have a lot of Airbnb experience, btw.)
But, as others have noted, the thing that makes this experience truly special are the hosts. Robert and Erica are the kind of people one hopes to meet anytime in life, but especially when traveling . They are gracious, worldly, welcoming, and genuinely interested in their guests. This is Airbnb at its best.
On behalf of my friends, I thank them and I hope to meet them someday myself.