I spent a full months in this house, and got to know it very well. All in all, it was quite pleasant. Don't take all the cons I list as discouragement, I recommend staying here, but you have to be aware of a few things
The house is very big, very spacious, having all the terraces and courtyards is great. It's very nice watching the sunrise over the lake from the roof.
The hosts are easy to reach, friendly, helpful and genuinely interested in making your stay as good as possible. The local house manager is also very helpful, but can be hard to reach as she is at work during the day.
Location is excellent, right under the basilica, and Plaza Grande is three blocks away.
The kitchen is well-equipped, with good quality knives.
The house felt very secure, and so did the town in general, we had no issues coming home even late in the evening.
There is a lot of art and decoration making the house fun and quirky.
The water situation is... unique. There is no municipal water in the pipes, only for a few hours a week. The house's water is stored in an underground reservoir, which is not very sanitary. Rainwater flows into it freely and there is a bit of mud at the bottom. So don't use the tapwater for even toothbrushing. The pump pushing the water from the reservoir to the roof is a bit broken. Sometimes it doesnt start, sometimes it doesn't stop and floods the roof. It also leaks all the time, so sometimes the hallway has a pool. If you use the large bathtub in the master bedroom, which imho is one of the best features of the house, then you need to call a watertruck every 6 days, if 4 people shower, then every 10 days. A watertruck costs 500 pesos, and we were charged for it. Despite the roof tank, shower pressure is really, really low in two of the three showers, in the third one its perfectly fine.
The beds are just very narrow, much narrower than a queen sized bed. Cuddling is a must.
The house is not really clean. The housekeeper only cleans for three hours a week, and the house is huge, so she only gets to some of the surfaces, rest is dusty, with dustbunnies behind furniture.
There is a disco across the street, it is very, very loud on Friday and Saturday night, until 3-4 AM. Bring earplugs.
There are occasional scorpions. We met three during one month, which is not too bad.
If it rains, the rainwater leaks from the courtyard into the hall a bit.
The internet in the house is quite slow and unreliable