Enjoying a prime seafront location on a sandy beach at the Black Sea, Blue Beach Studios is in the northern part of Mamaia in the Summerland area. It also offers free WiFi and free parking. Sunbeds and umbrellas on the beach are available at a surcharge. There is a playground for children. The restaurant serves Greek dishes on à la carte basis and features a terrace. Each evening, Greek and international live music can be enjoyed. Breakfast is served in the breakfast room. Blue Beach Studios comprises of 2 spacious and bright villas with fully-equipped, self-catering apartments. You can sip your morning coffee or relax after a long day on your private balcony or terrace while enjoying direct or partial sea views. The Blue Beach is within easy walking distance to sports and kite surfing facilities, as well as from various clubs which offer an active night life, especially during the weekends. Beach bars, a shopping area and a bus and taxi station are also nearby.
Probably the best hotel for family-with-children in Mamaia: on the beach (50m to the sea), nice rooms, _quiet_, nice staff, playground, breakfast was OK, the beach was clean and not crowded, you could do some water-sports if you'd like (H2O club was 30m away), free sun-chairs for hotel's clients.
Some might argue it's quite far from Mamaia's downtown. I'd say it's better this way (far from noisy night-clubs) and there are buses and taxis to help you get there.