There are definitely better locations for hotels in BKK than that, for sure - the area around there is really not nice, and for good food you would have to go to say Sukhumvit soi 14 (or beyond) or the other way to Ruamrudee. If into local food, there is a decent but slightly more primitive place on the opposite side of Sukhumvit between the expressway and the KTB building, which is pretty much a roof over some tables.

Let me know if you get to go back to Bangkok - happy to provide suggestions!