I am surprised by the very good rating in other comments. My room is old, it took one full day to have the safe box unlocked, the fitness room is a joke with old equipment not working anymore and the place used for storage of old stuff like cardboard makeshift sets for commercial presentations of bags of pillows, no air con and not a working fan. The small pool is stuck between the buildings, hotel taxi charges are quite outrageous (THB 1,500 one way to Pataya), the hotel in directly on Sukhumvit with a huge trafic noise.
Positively is a free wifi in the rooms (at least mine, maybe not true for all) with good connection level.
The hotel is surrounded by hugly commercial shops and buildings and the commercial center (500 m on right hand) is awfully noisy with not a decent restaurant so no way to escape the lameness of the hotel.

I have stayed here atleast more than 10 times on my every visit to Rayong for business purposes. It is extremely conveniently located next to a shopping mall and it is great value for money. Coming at around Bhat 700 per night it provides all facilities that a business traveller would need. A very functional and clean room with high speed internet. Don't expect luxuries here as this is a pure business / budget hotel. The breakfast has limited options but serves the purpose. An evening band played in the dining hall lights up the mood after a hard days work. Their sandwiches are a must to try.
The rooms are just right in size and are very clean. The air condiitoning takes a little time to cool down the room, but once cool you can relax.