Really good - I gave them barely 48 hours notice for two dozen cupcakes and they responded very quickly by email. Called me the next day to confirm payment information, and by 10 am the next day the cupcakes were delivered to our hotel.
The cakes themselves were beautifully presented and very tasty. The inside is quite gooey so it's a good idea to provide napkins! I had the Mojito and the Bailey's flavours and they are delicious.
My only slight quibble is that the pink cupcake pans used sometimes give you sticky pink fingers (they're not 'colourfast' I guess). Overall a very stres-free and professional experience! I wish they had a shopfront where I could try some more flavours :)