You may want to check out Plaza Florida Suites. They have nice kitchens with a regular stove, pans, plates, etc (you have to ask them to bring you in a microwave if you want one). Their rooms are clean, 24 hr electricity, air, and wireless internet.
I'm not sure on the current prices, but believe they are comparable with the place you posted. (i.e. $70-80 per night)
They are located in La Esperilla. Check out their site at
www.plazafloridasuites.com.do
Hope that helps