We have a recent post about St Vlas here.
Who are you travelling with? I can't find your apartments in the Balkan or Thomson brochures.
There is a fair amount of info already on the forum. At the top of the page you will see a search button. Type in the word and Bulgaria in the forum part and that should keep you busy for a while!

booked indepently,flight from dialaflight and apartments from holiday lettings or owners direct on the web,first time booked this way

once you start on DIY you won't look back!
I have "topped" the cost of living thread and you might find it useful.

thanks if works out will try again,useally go all inc,but if the prices are still cheap there might go again. find greece spain turkey etc to dear for food drinks etc for a familey,cheers