This looks cool! But in the future, maybe take reference of the dance rooms! Some that I’ve seen/been in usually seems spacious, well lit and most of the wall is mirrors! Also maybe add a mat?
Also the dance sign, the dark purple and magenta are like…TOO close in color, make a contrast type of color instead.
Also the ceiling lights could take more details!! ^^^
Maybe watch tutorials on building or look at photo references!!
Maybe add posters on the wall as well,
The office seems plain, and the wall texture and floor texture doesn’t fit well in my opinion
Try using different wall textures each room and floors too!
The office in most dance studios kind of looks like a principles office, maybe decorate it like a business office too!!
OR THE office could be near the door when you walk in.
Also the inside, maybe add wall trims on the top and bottom so it looks like a room!
Also maybe add a locker room with a bathroom included!
The bathroom doors could have door frames, maybe more details on the handles
Also the bathroom is VERY small, maybe take an example with public bathrooms like mall ones.
Maybe decorate the outside with bushes or a design
Also the inside wood floors, try making the texture a little smaller (in properties)