I believe u mean adjoining rooms. As i know all the rooms come in private chalets so they arent adjoining rooms but rather adjoining chalets

Marriott is approx. 2.5km - 3km away. But hotel has free shuttle in the evening at 6pm so u can use that to get to the city. The center of Hua Hin (bit further from Marriott) has plenty of bars but at least for us the areas outside center were more fun. For example that area close to Marriott (behind the shopping center Market Village) Hotel also has free bicycles so if you’re brave ebough, you can always cycle to bars :-) (we did it several days and evenings and survived! It’s actually a really cool way to explore the city)

The walking paths leading to the bus bungalows are mostly bumpy. Also, there is a 3-step wooden staircase leading up from the ground to the bungalow itself. I wouldn't recommend it, but do contact the property to see if any convenient arrangements can be made.