The flat is in a perfect location to see all the sights in Valencia. Easy walking distance to the metro and tram station to go further afield. There are plenty of bars and restaurants nearby.
It is very close to the bell tower which starts to chime at 8am but it didn't bother us too much. The construction noise of what looks like a new apartment block directly outside was worse, but again this did not start until 8 am and only on weekdays.
The apartment itself was all that we needed it to be for a short stay. Be aware that it is up 3 flights of stairs and that the bed is on a mezzanine with a steep stairway but as said the location more than makes up for being a little out of breath!
I would highly recommend.