The main problem is that the price appears in the site doesn't include the municipal tax (3.5 per person per night) and the cleaning fee (45!). you pay it (and maybe like happened to us - also discover it) only when you arrive. that can be a game changer for many people.
also, there were some problems with the maintenance (clogged taps for example), and inappropriate pictures on one room's walls.
It is in a central place of the city, but not necessarily worth it.