This was a bit tricky but I've made the changes in changeset 163790014.

The indoor rooms are mapped in this building and generally shops take up a single room. However, according to both this note and the `fixme=*` tag on the now removed LolaLiza shop way, ONLY now spans two rooms. I've therefore left the individual rooms tagged as just `indoor=room` + `level=2` and created a new way, which has the geometry of both rooms combined, tagged with all of the shop tags and `level=2`.