Small menus are good, right? So here goes (based on price, service, location)
Budget – Hanoi Backpackers www.hanoibackpackershostel.com/ (10 – 30 US$) – has dorm rooms too. there are 2 locations, one by cathedral, one on Ma May. Ma May more bustling backpacker life.
Mid Budget – Impressive Hotel http://www.impressivehotel.com about uS$35 for a room – great hotel, highly recommend. great for flashpackers
Upper Budget – May de Ville – http://maydevilleoldquarter.com/ US$70 per room
Mid Range – Maison de Hanoi – http://www.hanovahotel.com/ – ask for deluxe rooms with windows – about US$120 ish
Upper Range – Sofitel Metropole is my favourite. US$250 +++
As long as you are near Old Quarter then you’ll be fine.