The food is very good. However, the phone always goes to voicemail because the restaurant is run by one person, and even if you request a tentative reservation, they do not proceed with the reservation confirmation process. If you want to make a reservation, I think you have to go to the restaurant directly. Depending on the timing, you may have to wait for your order to be placed, served, etc., so I recommend that you come to the restaurant with plenty of time to spare.
The hamburgers and steaks are very tasty!