10/10 would stay here again!
We loved staying at Eric's place. It's a lovely ca. 40 year apartment that has been thoroughly renovated, so it's up to modern standards. Personally, we prefer these "old" houses to any of the new high rises they built all across the city. Location wise you can't do much better than this: 3 min. to Da'an MRT station, tonnes of restaurants within walking distance, 15-20 minutes by foot to 101...yet it's extremely quiet, no street noises whatsoever.
If you're looking for a place to stay with kids in Taipei, look no further!