Hattoyai Izakaya (Phone: 0971935282) (7.00626, 100.486915)
On Krajang Uthit Road, a single storey Japanese style wooden building with a courtyard. Options for indoor, outdoor seating or private rooms. We opted to sit inside where there was live music. It was a Sunday evening so not very busy and quite quiet, music was Thai popular with singer accompanied by acoustic guitar, so pleasantly unobtrusive.
Menu is fairly extensive, with options for cook at the table style or small plates, notable no pork in this restaurant. Standard Izakaya fare plus some spicy Thai small plate options like papaya salads. We had a selection of sashimi, beef & chicken Teriyaki and some gyoza. Service was attentive and prompt, food was good, we thought generally better than other Izakaya we've tried. The weird purple lighting isn't great as it makes it hard to read the menu or see your food.
Plenty of drink options, selection of Japanese beers with Asahi on draft, Hoegardens and Thai beers also available, plus Sake and Japanese whisky. Overall a pleasant evening, cost for 3 people was under Bht2,000.