Going up the steep, narrow, poorly paved road to the hotel can be challenging, but once you get there, the place is lovely.

The inn is charming. Our room was large and well appointed, with a big window and a great view of the lake. The bathroom was great except for the lighting. It was overhead, which made for dark faces, so shaving or putting on makeup was a bit difficult. Also the wifi was quite spotty. It worked in some spots, but not others.

The owners were great. They have a small restaurant attached to the hotel, which serves an excellent breakfast and sandwiches and soups at other times. One day our group went to the supermarket to buy dinner. We were missing a few things like mayonnaise, napkins, forks, bottle opener, etc. Our hosts allowed us to use the restaurant and provided us with whatever we were missing, all with a smile and no extra charges. Not many inns would allow that. It was lovely.

We would surely stay at CasaEstablo again.

Once you are in the main road you have to be careful because the entrance to the property is somewhat hidden. Not difficult, but you can pass it without noticing.
The way to the hotel is muddy and extremely inclined. If you bring a manual 4x2 car getting to the top can be a bit challenging even for the most experienced drivers.
As you cross the main door, you can spot right away it is a very cozy place. The hotel hosts (and owners) are super friendly, helpful and welcoming. They have two amazing dogs (equally friendly) that walk around the ground floor freely.
The rooms are astonishingly cozy especially during the winter. The bed is super comfortable and it hugs and embraces you. The views to the lake are wonderful. In the back yard they got a pool, hot tub and sauna. If you want to use the tub you have to ask for it 8 hours in advance.
The owners recommended us a restaurant, and some very cool places and activities to do in Pucón and some nearby towns as well.

After a lot of traffic jam and a lot of tourists this hotel is a nice and calm place with a marvelous view to the lake, but not to the volcano. The room was large, nice and as all rooms named by famous horses.
The breakfast is very good, at evening you can get some sandwiches or burgers. But sitting outside at the terrace and have a calm look over the lake is great.