I hope I can help with providing a bit of clarity. Old Lafrowda is standard rooms with larger flat sizes (and shared bathroom facilities) whereas new Lafrowda is all en-suite flats of 8 and studio accommodation. Although I do not know specifically which block is which, the type of room you have will hopefully make it clear if you are in new or old which I think is probably the main thing question right now as opposed to which block (sorry I cannot get that additional intel).
Hope this helps- do let me know if you have any other questions I can try to help with.
Melody
University of Exeter Student Recruitment Team