Hadar
That is a great question. In my opinion, the short answer is to use your cash and refinance it into a 'standard' loan if you are going to rent it or sell it when you are done. A hard money loan is designed to be short-term, and you must refinance or sell anyway. No point in giving up 11% interest and fees. Additionally, you may find that the pressure of the hard money loan will cause you to go faster and make poor decisions, or life could happen, and you could be delayed in completing the rehab.
By the way, I did exactly the above on my first and it paid off. I was doing 80% of the rehab myself because it was my first one, and I broke my ankle about 75% through. I couldn't do anything for more than three months. A hard money loan would have created serious challenges for me.
I ended up financing the home, and by the time I did, the market had appreciated, and the rehab added value. My loan was more than my total cost.
Good Luck.
Matt