This place had so much wrong with it. My wife and I attempted to take a shower on our first day after traveling, although hot water was available in the bathroom sink and kitchen sink, the best we could get from the shower was at best tepid! We contacted Key Barcelona and they sent a technician however he spoke no English. Never the less we were unable to understand his explanation that the water tank was incapable of producing enough hot water for the shower. Even if we spaced out the time between showers you could not get enough hot water.
Secondly ,Barcelona was chilly during our stay. The apartment has space heaters. The ones in the dining area and small bedroom were sufficient for that space. The living area had a portable heater, the master bedroom none . So if one wanted to sleep comfortably and dress comfortably in the morning you would need to move the heater. If the other person wished to stay awake in the living room it was quite uncomfortable.
The bathroom toilet seat was loose and sliding on the commode when you sat down. Notified Key Barcelona on the second day. I was told someone would fix it that day or the next. No one came. On the day before we left they wanted to send some over explaining the delay as their being very busy.
The bathroom often had an unpleasant sewer like smell more pronounced if you left the bathroom door closed.