Qype User (filimb…)
Yelp
The pluses: no street noise, very dark rooms, washing and drying machines (have to pay), beautiful large inner courtyard, moorish in design, with chairs and sofas to chill out on, FREE INTERNET in the nightclub downstairs, VERY CHEAP BEER in the nightclub, half a litre for EUR2.50, or a huge glass for EUR3.50, whereas standard Madrid price is EUR5.50. electronic lockers so your stuff is secure, electronic doors.
The downsides: small bunks, with people drinking in the room and making noise, small breakfast (compared with Los Amigos Sol where you can stuff your face), small shower cubicles with no hooks inside, so you have to walk to the showers wearing practically nothing. no kitchen, so you can't make your own dinners, ALCOHOL IS BANNED you're only allowed the booze you buy in the hostel.
This is a great hostel to go to if you want to meet people and relax, or get drunk very cheaply. The bunks are small, but it is really quiet and dark at night, which is a blessing in Madrid.