We had 2 nights staying at Tropical Garden Villa. The room was super clean & spacious and so is the king bed. The family is super nice. My 1 year old daughter had a great time playing with the owners' son.
The house is right at the vegetable garden so we enjoy the morning/evening walk. You'd better take a bicycle/ motorbike to the old town, especially under the hot July sun.
The family have motorbike for rent at 100k VND/ day, which is a reasonable price. The bike I got had a small problem with its key can be taken out when it's at "on" position. I just turned it on, took the key and kept in my pocket (LoL) while riding it.
Staying here is best bang for your buck! Definitely come back!