It has a charming atmosphere and a large selection of teas. Their pricing system with one tea per person minimum order is quite fair as well.
Staff is helpful.
What I am more concerned about is the quality of the tea. Previous reviews praised their teas.
I’ve been there a few times and I can not share that view. The Lishan I had last time was bluntly speaking – old and flavourless, by far not a good example of this category. No huigan, nothing, more like a standard flat tasting Alishan.
Tried a few Pu-Erhs which were ok, but nothing to get excited about, at least one gets more infusions. Also had other aged teas, like Tieguanyin and another which I forgot. Both on the more expensive end of the range Wistaria offers. Again, only okish, nothing that I would order again. I would have expected those aged teas to go for more infusions, but they flattened out after 6+ rounds.
Not sure if Wistaria has such a good reputation because it is more known among foreigners (mostly half of the customers are each time I went there)? I know the founder seems to be a very knowledgeable person in regards to tea, just not sure if that trickles down to the everyday customer in terms of what they get.
There are a lot of other tea houses nearby, but they do not specially cater to English-speaking customers, so are harder to find for the average visitor without local guidance. A bit further is an equally charming teahouse up in Jiufen(very touristy destination), which is on average more expensive for the tea, but has in my opinion much better tea. And a few down from the mountain onto the Keelung harbour

What am I saying in the end? Don’t trust the hype.