I don´t understand why this place is getting such a high-placing in the reviews! My wife and I booked in for a week, but promptly left after our first night.
The first reason we left is that our street-fronting apartment was extremely noisey - too noisey, in fact, for our usually sound-proof earplugs. So, contrary to an earlier review, even if you bring your earplugs, you still won´t block out the traffic noise, if you get a street-facing room. And, if you think you may want to relax in your room in the middle of the day ... forget it!!
The second reason is that the location appears to be really bad, run-down, and not safe. Their website says it is only a "15 mns walk to the...heart of San Telmo". The problem is that, at night time, we were told by a number of people never to walk in the area and always call a taxi first.
There were some other minor problems with the room, which may not trouble too many people. But, given the feeling of arriving and your taxi driver saying "You´re not staying here, are you??", it does not bode well when you find there is no safe in the room (nor one in Reception - which, by the way, is only open til 1pm at the weekends), and although the outer doors are secure, the inner doors could easily be tampered with.
Other than security/noise concerns, the owners have a strange system of asking you to sign a contract, pay in advance, and leave a deposit for the duration of your stay. Now, that´s fine if you are sure you will be staying for the full duration, but that system does not allow for you changing your plans after a couple of days. It seems like they are trying to run a cross between a "serviced apartment" and a "rental apartment".
They are nice French guys, but only at it a year or so. I don´t think they have quite figured out their target market yet !!