I stayed as a solo traveller for 3 nights in Johnny's place, and thoroughly enjoyed the experience! The room was clean and bright, air-conditioning and Wi-Fi were good, neighbourhood was safe, and Johnny was organised and very helpful with advice and directions. I didn't do much planning before coming so his suggestions really helped. There are buses that will bring you to various metro stations or you can just walk 15 min from Taipei 101 station. Just plan your route on Google maps.
Many food options just around his house, and Johnny let me do laundry too. Johnny was also very kind and waited for me to reach at 9am to check in before he left for work that morning.
Given the location of the house, I really recommend travellers staying at Johnny's place to visit Elephant mountain 15 mins away by foot. I went there for sunrise and the view was good. There is a hiking trail leading from the viewpoint further into the mountain range. I went on it and came down from Tiger Mountain some 3 hours later. Good morning hike and views, so close to the city. Thank you Johnny!