If you were a tourist and asked me to recommend a Japanese restaurant, I would immediately say SUSHI ZENTO. I have been travelling Ipoh to find a good Japanese restaurant that has great service, great food, friendly staff and amazing location. It seems like a very difficult hunt to search for a restaurant with such many criteria, but eventually, I found this place.
The thing about this place that I love so much is that whenever customers enter the store, they would welcome you with their greeting 'いらっしゃいませ or Irasshaimase' (meaning welcome to our store) and a cheerful smile. The food overall has a great flavour and gives you the feeling Japan itself. Service is fast, but if you don't book a table after 7:00 you're going to have to wait.
The price is actually reasonable because the ingredients are actually from Japan and all the chefs are all professionals. If you aren't willing to pay the price, then I don't think this is the right restaurants for your daily meals (maybe this can be a location for events or functions).