We too are just back having spend from 1 July for 9 nghts in St Vlas/SB and we watched the storm from our balcony. No mozzies got us.
However, we drove up to Kavarna (North of Varna) and I was bit and bit and bit. Used up one small can the pharmacist recommended on bites and ran out on the last night. Russ and Karen said that they don't like lemon so I bought a lemon and squeezed it all over me. Seemed to work ok.
Last week in the Daily Mail there was an article about the best 5 repellents, Boots coming out on top.
Still scratching like hell though.