I highly recommend this airbnb listing. We had a great stay in Sonam's place. It's very accessible to everything -- bus stops, restaurants, and convenience stores. The mrt is also walkable from his place. It's also not hard to find.
The place was very clean and quite spacious for three people. Almost everything was provided in the studio, it's really like having your own place in Taipei. His place exceeded our expectations and I think it's more than what we paid for. :)