well designed apartment inside Barrio Gotico, spacious and well equipped.
the location is great - so handy for sightseeing, partying, close to great restaurants and bars.
it is in a pedestrian area so, you'll have to walk from (and to) a taxi - which might be some issue in case you travel with a lot of luggage. though it's only couple of hundred meters from the public street.
the apartment has all critical amenities (mind there is no washing machine so, in case you need it, you have to use a public laundry, which is luckily located in the same block, so quite handy overall)
the only drawback was a construction of the bathroom, which, despite nice design, has a very narrow partition glass at the shower area - so you splash a lot of water on the floor every time you take a shower (and since there is no drain in the main part of the floor, the water, falling on the floor, remains unless you wipe it. but this was minor thing
the rest was great. we really enjoyed our stay at Xavier's!