This is a place with a friendly host who can tell you about Hanoi and show you around if needed. Not a hotel, we just have a spare room in our apartment :)
It's close to public transport and easily reachable from the airport as well as a quick bus ride to the city center. (but not IN the city center, please note that)
The place is light and has a great view. It is good for couples and solo adventurers.