We stayed 5 days in 11-58B apartment, we were 5 people (2 couples + 1 person). On paper, it’s a 3 bedrooms.
1/The apartment is on two floors, down it's just a small entrance with the stairs. The ceilings are low: they have probably made two apartments in one, because just below there is another apartment that must have the same characteristics
2/The rooms: one of the three bedrooms is a “normal” room, almost as it has no ceiling lights but two lamps that do not light very well. For the others two, it is more original: one is adjacent to the living room, separated from it by a clear plastic sliding door, and the window inside overlooks the hallway of the building! The last room (single bed) is a continuation of a dressing room: it is very small and has no window ... And the switch to turn this "room" is not in the room, but in the living room, very not practical (and there is no outlet in the room to plug in a device, such as a bedside lamp ....). The all beds are hards.
3/Switches : there are several that nothing ligth, others when activated cut the electricity of a room (if your apn was in charge ...), and others that are in the closet of a room and lights the living room ...
4/The cleanliness should be reconsidered. The fitted carped flooring of the apartment is dirty (stained), the bottom of the bathtub is black (he did not really be rubbed for some time!) The toilet bowl is not very clean, a towel holder is broken (but the screws were placed in the holes to hide, until we put a towel on it!)
5/The kitchen equipment is basic: no forks / 2 knives / 2 tablespoons / 4 glass / 1 mug /2 coffee mug / few bowls and saucers / many many chopsticks. For cooking, there are two dirty woks, no pan. The day we arrived, there was water in the kettle which be there for a while ... There is also a microwave, a washing machine and a fridge that work
6/In the continuity of the kitchen, there is a kind of small porch ... but it lacks windows that have been replaced by cardboard and / or plastic ...
There are air conditioning in the main room (which works), another one in the "normal" room (not tested), a TV that works, an ironing board and an iron that we asked
7/The door does not close with key from the inside
8/The apartment is located in a typical apartment building with a lobby downstairs. It is a 15min walk from the Jianguomen subway station (lines 1 and 2), 30min metro ride from Tiananmen Square, 20 minutes from Beijing Railway Station (bus 666 or 673), 1h45 from the airport (taking metro and Airport Express line), 1h from Carrefour (walk+metro line 1 + bus 715). The area is not really interesting, but the apartment is close to two supermarkets to buy water.
We were 5 for 5 nights : the night amounted to 15.8 € / person / night (without the commission of the site), which is not much for Beijing.
For registration to the police (mandatory!), we called Edmond who picked our passports and took care of that for us, it was nice.