Monica's house has the potential to be very nice. She was very nice, checked us in and was kind enough to call a cab for our restaurant reservation that night.
The house has a beautiful view, and I think that's what you are paying for. It doesn't appear to be very well kept, or updated, or regularly really cleaned.
When we showed up, the floors were dirty (bathroom floors had pubic hair around the toilet, our feet didn't feel good on the wood floors). When I opened the cabinet in the main bathroom to find a garbage (which there wasn't, there was only one in the kitchen on the first floor) I instead found a stack of old books and magazines and a condom wrapper. There was a half-drunk water bottle in our closet, old food in the refrigerator, coffee stains on the counters, and just random junk and crap (an old ice cream spoon in a basket next to the fireplace, for example). It was very obvious that if it had been cleaned, it was only barely (made the beds? Maybe wiped a counter?). Also many electrical outlets were broken, and "breakfast" appeared to be some packaged hard bread that you use as soup croutons.
We messaged Monica, who responded very quickly and apologized. She sent someone to clean while we were out. When we got back, the things we had told her about were addressed, but we noticed the space was still not clean. The lower floor bathroom had pubic hair on the toilet, as well as long blond hair in the shower drain - this was a bathroom we had not used at all. The beds in one of the additional bedrooms had dirt and debris on them, as well as a kids drawing on the floor.
The overall feel of the place was just unkempt and dirty, not taken care of. We didn't feel confident or comfortable sitting on the couches (not when you found a condom wrapper), and understandably didn't feel great about the comforter on the bed. The main bathroom smells strongly of mold, which another reviewer mentioned, and when we got there the windows were open in that bathroom so it would appear she is aware of it. We discussed getting a hotel room instead, which is a bummer when you have limited time in a city you have been looking forward to being in on your honeymoon for months.
I let Monica know about all of this, and it is possible she will address these issues. We stayed in 8 other places during this trip to Spain, and all were sparkling clean.
Again, Monica seems very nice and was quick to respond to everything. But this apartment needs some attention to be like what the listing says it is.