Hii.. please avoid non ac rooms in April.. you will get fried.. please search for Ac rooms.. even though it is bit cooler as compared to other areas in Goa you will have a bad time..
We will be staying in South Goa so we haven't really looked at stay options in North Goa. If you have researched on Arambol then you should go for it! You can check out booking.com for stay options.