I have been to Alisei quite a lot of times so wanted to give my feedback. Obviously just my personal opinion but I work in the hotel industry. A few things I didn't like. At the weekend it can get very full , and the pool isn't really big enough for all the rooms they have, so it does get crowded with people drinking at the swim-up bar and basically just standing around. Twice I've been when it has been full of really loud Dominicans, loads of children, lots and lots of noise, it felt a bit like Boca Chica beach during Samana Santa to be honest. In the week it's quiet and nice.
They play quite loud music most of the day beside the pool, which means if you want to sit and chill out and read a book you can't without listening to the thud thud thud of the bass. There's nowhere really you can get away from the music, even on the balconies of the apartments you can still hear it.
The restaurant is good, but very expensive for what it is. I think the mains were coming in at about RD$600 for a salad. A light lunch for three of us cost RD$4000. And it was a light lunch.
The kitchens lack an oven and also no microwave, so cooking for yourself you're restricted to the stove top. And I found the interiors of the apartments very basic, they've built all the kitchens in cheap plywood, no light fittings anywhere just moulded plaster.
The beds in the second bedroom (twin beds) are extremely uncomfortable. Maybe OK for a couple of young children, but not good for adults. The chalets with an upstairs only have two double beds which can't be split, so if you're travelling as anything other than two couples, these can't be split.
The beach in front has a lot of rocks in the water, you have to walk slightly to the right and there's a little hut, and this we found was the only soft sandy part. Otherwise it is hard to get out into the water to swim.
The best part is the massage, it's only US$30 or so for a full body massage in the spa and worth every cent. Try to get the male masseur, he really is one of the best on the island.
I realise it is a nice hotel, but I just thought I'd give you some honest feedback.