Pros; For most part the hotel design is very interesting in design with glass walled bathrooms and but not much privacy for a large family. I ended up using the lobby bathroom for most part. But I got a great deal for 100euros a night for a family of four. Free wi-fi, and laptop in your room was nice. I was on the 5th floor so the early morning noises from club goers did not bother me. And our staff for most part was very helpful.
CONS: No room service for one whole day, so we ran short on toilet paper and piled up on some trash from bringing food back to the room; no privacy in bathroom; laptop was on it's last leg; did not eat the food because it was very pricey. But for 100 euros a night what can you ask for. I wouldn't pay more than that though. Finally, centrally located within walking distance of various attractions and historical sites, just be prepared to walk a lot. I almost forgot, hotel does not offer there own parking. There is underground parking around the corner but be prepared to pay up to 28 euros for one overnight. Parking alone cost me 85 euros for 2 and half days. I would check other options if possible.

Overall, a three star hotel- a clean, quiet hotel located in the Salamanca neighborhood, just a 5 minute walk from the northern tip of Retiro Park- for 120 euros/night. Having access to a computer with internet might override the poor, poor customer service- and make it worthwhile to stay here.

We stayed here after a horrible experience at a hotel on Gran Via (the loud, crowded busy street in the city center). We reserved the hotel for 120 euros a night and arrived early on Friday morning- there was a room available immediately, so they kindly gave us the key at 11am.

Our room was normal sized, and was equipped with a special shower with extra massage showers, a high tech safe (which relies on a credit card swipe rather than a passcode) a small tv and a laptop computer connected to wireless.

Upon arrival to our room after a day of sightseeing, we were told that if we wanted breakfast at the hotel, it would cost 16 euros per person (what a rip). Our computer internet was not working and when I called reception, they asked me if i checked to see if the cord was connected. There was no cord. I called back and told her that that there was no cord. I was told that someone would come to help me in 5 minutes. 30 minutes passed and no one arrived. I called again. 10 minutes later, someone arrived (who was not that friendly) to get a cord and plug it in to the internet. The receptionists at the hotel, surprisingly for a city like Madrid, don't speak English very well (our receptionists in Sevilla and Granada spoke better English)- and we had a difficult time communicating when I asked them to give us a wake up call in the morning. On our way out for the day on Saturday, I asked if the hotel could book us on the free hotel shuttle on Sunday morning - the shuttle departs every 90 minutes, so we booked the shuttle time closest to our flight departure. Later that evening, when we arrived in time for our siesta at 6, we were told that the shuttle was "broken" and that there would be no service to the hotel on Sunday morning. We were instructed to take the metro or take a taxi to the airport. How does offering a customer that option (that costs 40 euros, I might add) an appropriate substitution for a free service that doesn't require you to lug your suitcases up and down stairs? I spoke with the receptionist and asked them to comp our taxi fare- and she said that she would have to ask a manager to find out if this was possible, but that it was not likely. When I shared my frustration at their poor customer service, she said there was nothing she could do to help because her manager was not there. (why she could not email or call her manager i do not understand).

If you are thinking of staying here - DON'T.
The problem is a night club across the road open until 6am in the morning, Thursday to Saturday.
While I was there, we had a street brawl with at least ten youths fighting on the street in front of my room. Every night from Thursday to Saturday the club would have patrons on the footpath in front of it singing, yelling, fighting.
The Hotel was completely ineffectual at combating the situation.
The Police visited several times but were also completely ineffectual .
Bottom line
If you do not mind being unable to sleep between 3am and 7am, Then this is perfect.
Otherwise move on book another hotel
There is nothing so special here for anyone to want to stay here. There are much better hotels.
In case you are interested my company book my accommodation, I have no say. If I did I would have moved on Friday morning ASAP.
A horrible stay in a below average hotel

If I spend 130 Euro a night I expect more and have seen better options. I'll start with the good things:
- interestingly designed rooms with glass walled washroom
- acceptably clean
- quaint, upscale neighbourghood
- nice restaurant across the street
The bad:
- Very very noisy - beware of this hotel if you need your sleep! garbage trucks picking up garbage at 12:00 midnight; you can hear every conversation happening on the street (even with windows shut & curtains drawn). goes on well into the morning hours!
- Breakfast - doesn't start until 7:30am - too late if you have a business meeting to get to
- Dinner - non-existent when I visited the dining area at 8:30pm upon arrival
- Service - limited
This is just my opinion, but maybe someone will find it helpful.