I don’t know how the paris apartment is set up but I don’t think there is any model size limit that you couldn’t get around by splitting up the model into smaller parts. I think, in theory, your main limiting factors are going to be browser memory limits (so try 64bit firefox/nightly browsers maybe?) and what you can render with WebGL. WebGL is pretty close to OpenGL ES2 features but with your desktop machine cpu & gpu to back it up. But it’d be awesome to see that in a browser!