Yes, bilateral aid is better for coordination, because there are not as many agencies to agree before sending the aid. With multilateral aid, there is a lot to agree on. The countries must agree on how much aid to send, who will be paid what, and what purpose it will be used for. Bilateral aid must only be arranged with the receiving country.
Yes, bilateral aid is better for coordination because there are less groups and individuals involved. The more levels of coordination exist in an aid plan, the more likely there is to be corruption. Bilateral aid allows for better monitoring. Countries can better tailor aid plans in order to meet development objectives. There is more accountability in bilateral aid.