Hi Diana, The biggest resorts are Sunny Beach and Golden Sands. Of the 2 SB is the biggest and is expanding by the day with plenty of self catering apartments being built. Both are good resorts, clean,nice beach etc.,however, GS is hilly in parts SB is flat. My own preference is definately SB although Have been to both.
Always look to book the best hotel rating possible, 4* if funds allow and go B+B as food is better and cheaper outside the hotels.
You will find weather is normally very warm in June and air conditioning is available in most of the better hotels.
If you have any specific ones in mind just ask away or see the hotel reviews on this forum.

The Toonman

Hi if you go to the top of the page there is a resort report which might be of some use to you .We have been going to G/S for years ,but this year it was busy with a lot of young ones .G/S is hilly no matter where you go there are hills,unless you are on the beach front.There is also St Konstantin ,and Albena are two more resorts worth looking at. We always go B/B as the meals are so cheap to eat out .Some of the three star plus are good hotels ,we stayed in two and the rooms were big and clean. Hope you find what you want ,Bulgaria is a great holiday and the people very friendly June

Thanks for the replies..especially about going B+b as we normally go all-in.... will let you know how I get on!!!

I was in Sunny beach this May the weather was brilliant hot not just warm except one morning when it bucketed down, but back round the pool by lunchtime. Fairly cool in the evenings though.

hey,

we were in sunny beach at the end of july and it was boiling, had one night of rain in the week we were there. it was great