Myself and a few friends stayed at Eduardo's apartment for three nights in June. The apartment is modern and comfortable. The showers were a little on the cool side if you were the last one in. However, it is the location that really sells this place - you are literally a 30 second walk from the Cathedral, right in the old town with all the bars and restaurants nearby. Because of the central location, we did experience a little noise at night especially in the early hours of Saturday but that's to be expected. There's also a shared roof terrace: we didn't realise it was shared with other apartments but it didn't matter, most of the time it was just us up there. It's a nice space to relax in the late afternoon.
Eduardo was really good at responding to my messages - I didn't wait more than an hour for a reply- and there was no language barrier either. This was particularly useful the day we arrived and couldn't find the local supermarket. I sent a message and an hour later we were walking the two minutes it takes to get there! Thank you, Eduardo, for being so responsive :)
I have previously stayed in a hotel in Valencia near the City of Arts and Sciences and would say I much prefer staying in Eduardo's apartment in the old town. You are so close to everything here: it can look as though the distances are quite far on the map but in reality the old town area is a network of little lanes and streets and nothing is that far away.
We took a taxi to the beach a couple of days, which costs about €10 each way. (We also got a taxi to and from the airport to the apartment, which cost €21 and €13 respectively.) On our last day check out was at 12 noon but our flight wasn't until 9pm so we made use of the lockers that are available and left our bags so we could go on a bike ride around the city, enjoy a leisurely lunch and do a bit of shopping (there are lots of lovely independent shops as well as high street names). This was a perk as we were expecting to have to carry out cases around with us for the day.