Buy a dongle for RD1000 for your Internet. You can stay in cotecito inn in bavaro for 2 weeks for less than RD14,000, depends on bartering skills. I got a week for RD5000 a while ago. I spoke to others who paid much more, I expect through lack of personal skills and not knowing how to bargain with the reception.
If you don't want b&b then you can find any amount of apartments for $35 per night, for under a month.
Bavaro is somewhere you can find whatever you want and pretty much pay whatever you want right now. Lots and lots of empty apartments by the beach.