It is Jade Garden !
Lol I just snap this on tv
It is nearby Nami Island. I took a taxi there from Nami island and it cost me 7000 won.
You can also take a free shuttle bus at Gulbongsan station.
This location is the same drama location for That Winter The WInds blow. ( the reason I visit this on the first place)
Address :80, Haetgol-gil, Chuncheon-si, Gangwon-do
강원도 춘천시 남산면 햇골길 80
Entrance fee : Adult - 8500 won
Klook package : Alpaca-world-jade-garden-gubongsan-mountain-observatory-day-tour-seoul/?
For more info you could check here : https://english.visitkorea.or.kr/enu/
By the way I cant wait to finish this sweet drama !!
Other places you need to visit in Seoul
N-Seoul Tower :Klook-tailored-bus-transfers-myeong-dong-n-tower-seoul/
Lotte Tower :Lotte-world-sky-admission/
Recommended wifi ( check their website for the latest offer):
Unlimited data and up to 5 devices
Roaming man (no deposit) : Roaming Man
Travel Recommend : https://www.travelrecommends.com/