Garbage can in kitchen was left full of food products from last guests. An odor was apparent upon entry. I took the bag of trash to the front office to ask if they could confirm if the room was cleaned and sterilized. The response was inconclusive, we were offered another room, but we declined as it was 11:30 pm, we had carried a lot to our room and we were really tired from a long drive. I asked where I could dispose of the trash and instead of offering to take care of it I was provided instructions as to how to find the dumpster at the rear of the building. The rest of the room and bedding were clean. I believe the cleaners just overlooked taking it when they cleaned the room. The bed was comfortable and we had a good night sleep.