Mamaia

Mamaia is the loudest, most crowded, most photographed slice of the Romanian seaside — and depending on what you want, that's either the appeal or the problem. The sand is genuinely good (fine, light gold), the water is shallow and warm, the resort layout is simple (one road, sea on one side, lake on the other), and the density of hotels, restaurants, clubs, and beach bars rivals anything in the eastern Mediterranean. Aqua Magic, on the southern end, is the largest water park on the coast. The cable car (Telegondola) gives you a moving overhead view of the whole strip. Off-season — May, late September, October — Mamaia turns into a long quiet beach with Lake Siutghiol on one side; some of the hotels stay open and the experience is completely different. Summer festivals (Neversea is the biggest) define July–August; if you don't want crowds, avoid these weekends.