When planning a budget-friendly trip to Sunny Beach, it can be really rewarding with a bit of planning! For accommodations, besides major booking sites and Airbnb, check out local guesthouses and hostels. Sometimes, they offer better rates when you contact them directly. It's a popular spot, so booking in advance for shoulder seasons like late spring or early autumn could save you a significant amount on lodging.
For transport, if you're flying into Bulgaria, Burgas Airport is closest to Sunny Beach. Buses from the airport to Sunny Beach are quite economical, and they run frequently during the high season. While in Sunny Beach, the local buses are a great way to move around without spending much. Alternatively, bike rentals are affordable and allow you to explore at your own pace.
In terms of activities, there’s plenty to do without overspending. Of course, the beach itself is free and ideal for spending long days soaking up the sun. Be sure to check out Old Nessebar, an UNESCO World Heritage site just a short bus ride away; wandering through its historical streets and enjoying the seafront views is an excellent, low-cost adventure. Also, local markets are fantastic for picking up souvenirs and trying Bulgarian snacks on a budget.
Hope this helps, and enjoy your trip to Sunny Beach!