The flat is in an excellent location within walking distance of most places of interest. It is 3-5 minutes walk from the metro which links directly to the airport. Buses are about a 2 minute walk away as is a well stocked supermarket. There is another good supermarket 3 minutes away which opens earlier.
The flat itself is on the second floor and the steps are quite steep and narrow so may be a problem for people with mobility issues. It is amazingly quiet for somewhere so central. It is in a narrow street which itself is off of a pedestrianised street. It has a small balcony which you could put a couple of chairs on although the view isn’t great but then we came here to see Valencia. The shower is good and there are places to put ‘stuff’. We found the bed to be comfortable and there is plenty of storage for clothes. There is plenty of prep area in the kitchen. There is enough equipment to cook a meal though we would have appreciated a few more utensils. If you want to eat out there are many places within a short walk.
Emilio very kindly allowed us a late check out as there was no one coming in that day though I believe he has somewhere you can store your luggage if you need to arrive early or leave late.