(finally my request went through!)
I am surprised that Dong Huong Hotel has no review yet. Dong Huong, the restaurant that is located at the same address have reviews though. My family and I (4 adults) enjoyed our 2+4 days stay at Dong Huong Hotel (in between, we went to Switzerland & they helped us keep our luggages).
Location wise, Dong Huong Hotel is about 1 minute walk from Metro Belleville (last stop on Line 2 or 11). It is convenient for us to get to town (in 20-30 mins depending on where you are going), and very easy to find from the metro. Surrounded by at least 3, 4 different supermarkets, there are also many eateries serving Chinese and authentic Vietnamese food. For those who want a more Parisian environment or central area, you need to pay more for somewhere else. But we are happy with this.
We were given access card to get into the building. There are stairs and a small lift. We stayed in a 2-room unit on the 5th floor - 2 rooms, a living room + kitchen, a shower room and a toilet. Very huge space for us & we can make some food. We also paid a small sum for wireless internet.
In terms of decoration and feel, it makes us feel homely. It is clean, tidy & simple, hence our stay was comfortable. We also appreciated their food in Dong Huong restaurant greatly.
Think of them as a service apartment with more space, at a worth-while price & convenient location. They have friendly and helpful staff downstairs that you can ask them for directions, which we did. We would stay with them again when back in Paris.