The studio address in Haeundae
The address is Studio Riha, Unit 205-1, 2F shops, Haeundae Hansol Solpark (U-dong), 564 Haeun-daero, Haeundae-gu, Busan, Republic of Korea. The home page puts it in Haeundae so the lesson can sit inside a Busan day.
The address to type into a map
Studio Riha, Unit 205-1, on the second floor of the shops at Haeundae Hansol Solpark in U-dong. The street address is 564 Haeun-daero, Haeundae-gu, Busan, Republic of Korea. The button on the address card opens Google Maps with that destination.
What “2F shops” is telling you
You are looking for a shop unit on the second floor of Hansol Solpark, not a separate house on the street. Unit 205-1 is the room. The building sits on Haeun-daero, which is also the road the city bus stops are on.
Why the introduction calls the location easy to add
The location introduction says the studio is in Haeundae so it can be added to a Busan day you are already spending there. The walk times that make that true — subway, bus, beach, island, Busan Station, and the airport — are on the transit card beside this address.