I highly recommend staying at Joseph and Anna's especially to people traveling alone in Taipei. Communication was excellent, they are very friendly and helpful. We even had diner together, it really felt like home! They are also very discreet so it wouldn't be a problem if you prefer more privacy.
My room was very spacious, clean and comfortable, they provide everything you need from toothbrush to shampoo and even some snacks, tea bags, etc.
Check-in/out process was very easy, they provide very detailed instructions and they are also flexible about the timing if it can be arranged.
The surroundings are also very convenient, a lot of places to eat, you can easily walk to NTU's campus, Shida night market and more trendy area in the north.
For the price this place really deserves 6 stars. Thank you again!