You wouldn't want to spend your honeymoon at Arusha Centre Inn but it's not too bad an option if you find yourself in Arusha for a night or two and want something that is a step up from the more rough and ready end of the market.
My colleague and I stayed there for one night after our camping safari. I think we paid in the region of $25 to $30 for a double room with private bathroom.
By African standards the rooms weren't too bad for the money and have a TV with a handfull of channels. The bathrooms have a toilet, sink and hot water shower. The hotel has its own generator which is handy for the regular power cuts that seem to occur.
Downstairs there's a good restaurant which is useful if you don't want to be on the street after dark. The room price also includes a great breakfast with fruit, fruit juice, toast, eggs and tea or coffee.
A reason to stay at Arusha Centre Hotel in itself