Wake up in the heart of Sofia inside a living work of art. Yellow Boom! is a bold pop-art studio where striking graffiti murals, neon accents, and vibrant design make every moment feel electric. Step outside and you're on Vitosha Boulevard in minutes. Direct metro to the airport at your door. A sunny private balcony, full kitchen, and washer/dryer — comfort meets colour. Sleeps 2. Groups welcome — ask about our neighbouring apartments. Book now. Sofia is waiting.