We had a great time staying in Carlos' apartment. The location was really central, being about 10 mins walk from the heart of the old town and all the sights, cafés and bars. The view was wonderful, looking out over the kings garden and the palace.
We were 5 adults and although we found 2 of the bedrooms a little cramped, the living areas were very spacious.
The apartment was well supplied with lots of mugs and plates etc, and we cooked for ourselves with no problems. There's a microwave and dishwasher too.
The only issue we had was with a rather steep staircase with no handrail going up into the loft room. This would perhaps not be entirely suitable for young children or the elderly.
Carlos himself was readily available over our stay, and showed us where to find everything we needed nearby.
All in all a fine place to stay.