I've never experienced something like that with any other hotel in my entire life.

I booked this hotel with booking.com.

Hotel San Carlos took my money twice for a night (85€/ nigh.. which is not that cheap for an hotel in Guatemala ). When I realized it, I Sent them an email, they apologized and told me they would refund me, they gave me a "proof" of the refund... As I was still not refunded for the mistake they made couple of weeks after, I gave the proof to my bank, to ensure money was sent and "on its way".
My Bank told me that the proof was totally false and with no value
3,5 months later, No refund !! Sent them emails and no answer any more.
They told Booking they refunded me... Now I'm screwed, still trying to find solutions and still calling booking.com as I could get my money back.

Can't believe it, they've got good rates, but they definitely don't give a sh*t about customer experience... and they stole my money !!!

I had an early morning flight our of Guatemala City and found the Hotel San Carlos and am I glad I did! Easy and quick Uber ride from the airport and within walking distance to many restaurants and attractions! Hotel is very quiet - rooms are wonderful!

I stayed here with a group starting a trip through Guatemala. San Carlos was a wonderful start to my first visit to this country.

The hotel is very comfortable, and very elegant. The rooms are moderate in size by US standards, but very comfortable and very well appointed. Lots of closet space, very nice bathroom, and I didn't lose my sweetheart in a ridiculous king-size bed. The room was very quiet, as was the entire hotel.

The breakfast (included in our package) was very good, and had lots of options. Infinite coffee was available. We didn't eat at Hotel San Carlos other than breakfast, but the dinner menu looked quite good.

The hotel is about 3 minutes walk from the US embassy, so if you have business there you're in a good spot. There are several restaurants nearby, including La Estancia - excellent!

There is an inner courtyard in the hotel with umbrella'd tables around it, and a very nice bar area to lounge in. Wi-fi is good here.

The staff was great. Very helpful, and forgiving towards my very limited Spanish. The staff is generally conversant with basic English, I was embarrassed that I didn't know more Spanish. The desk staff were fluent in English, and very very gracious and helpful.

I wish I could have stayed here for a few nights and gotten to see more of G City. Hotel San Carlos is a gem of a spot - the staff, with the added bonus of architecture and atmosphere, made for a delightful one-night stay.