Its been a few years but we found it to be the best 3* we have stayed at in DR.
Its in Sosua, which is fairly lively, they have nightclubs if you really want to venture out at night although the hotel does have a small disco.
Its not luxury but comfortable and the pools are great.
The food was very good and the entertainment was quite good most nights.
They have 3 (I think) amazing jacuzzis right on the edge of the rocks overlooking the sea.
We stayed just before Xmas and it looked so pretty all lit up at night. The only downside that while the beach is lovely the sea can be very rough there, well it was most of our 2 weeks with red flags for no swimming, but there is a nice safe beach in Sosua itself and the pools make up for it at the hotel.
One of the Casa Marinas selling point is that its not as isolated as some of the hotels in DR or in a complex like Playa Dorada so you can get to see how the Dominicans live and work.
I have stayed at better hotels (and worse
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) in DR but I would still go back to Casa Marina and its about the only 3* in DR I would say that about so far.
Lynn