Cha EUN WOO (ASTRO), ”This isn't a room...” What was the condition of the room that caused him to express dissatisfaction? = ”Rented room in Finland”

Cha EUN WOO (ASTRO) expressed dissatisfaction after seeing the levitating tent. In the fifth episode of tvN's "Finland Rental Living" broadcast on the 3rd, City Boys' Lee Je Hoon,
Lee DongHwi, Kwak DongYeon, and Cha EUN WOO were seen traveling to a remote rural area where there is no running water, electricity, Wi-Fi, or even an address for their homes.
The four of them followed Oiva into the house to look around, but they saw that there were only two single beds in the room.
The four of them panicked when Oiva said, "I'll show you a special room." The special room that Oiva introduced was a tree tent hanging in the air.
Cha EUN WOO asked, "This isn't a room, is it?" Kwak Dong Yeon then climbed into the tent himself and commented, "I think I'm going to get scoliosis."
Nu wanted to avoid the private rooms, asking, "It's cold, so do you want me to hug you and sleep with you?"