You can ask in the main Complex office for a list of excursions. Listed below is a taster of what's on offer (Prices are per adult - children in brackets - approximate prices) 

2 day Istanbul trip (Half board) - 159 lev (70 lev)

(The Istanbul trip is an extremely good value for money trip and is highly recommended - includes accomodation, transport, a tour, 2 breakfasts and a day and a half of free time)

2 day Sofia trip (Full board) - 186 lev (60 lev)

Kazanluk - valley of roses and kings tour - 89 lev (30 lev)

Plovdiv and Bachkovo monestry - 61 lev (20 lev)

Blue Mountains - 66 lev (30 lev)

Sozopol and Ropotamo (The southern coast) - 52 lev (23 lev)

Bulgarian Village - 45 lev (16 lev)

Catamaran Cruise - 130 lev (30 lev)

Lazy Day Cruise - 70 lev (20 lev)

Catamaran Sunset Cruise - 90 lev (20 lev)

Horse Riding - 35 lev

Jeep Safari - 80 lev

Off Road adventure - 90 lev

Or simply take yourself down to Sunny Beach, Nessebar or even Bourgas. The best way to do this is by bus (See the getting around section) or by hire car (Which can be organised on site)