Answer:
"Queridos papás: <em>(Dear parents,) </em>
Espero que se encuentren bien.<em> (I hope you are fine).</em>
Mi viaje a la ciudad de México fue maravilloso. <em>(My travel to Mexico city has been wonderful).</em>
Estuve hospedada en el hotel Marquis. Este hotel se encuentra en el Paseo de la Reforma, una de las calles más importantes del país. También tenía una vista impactante al Monumento de la Revolución desde el bar. <em>(I stayed in the Marquis hotel. This hotel is in the Paseo de la Reforma Street, one of the most important streets in the country. Also, it had an impressive view of the Monument of the Revolution from the bar).</em>
En el primer día fui al monumento del Ángel de la Independencia, que es precioso. Ojalá pudieran venir a conocerlo algún día. <em>(In the first day, I went to see the Monument of the Angel of the Independence, that is beautiful. I wish you could see it some day).</em>
En el segundo día, comí unos tacos, que son un platillo típico. No les puse chile, pues no lo hubiera soportado, pero estuvieron deliciosos. <em>(The second day I ate tacos, which are a typical dish. I didn't put them chili, because I wouldn't handle it, but they were delicious).</em>
El tercer día, visité la Torre Latinoamericana, que fue el edificio más alto de México hasta el año 1972. La vista es impactante. <em>(The third day, I visited the Latin American Tour, which was the higher skyscraper in Mexico until 1972. The view is amazing).</em>
Después estuve paseando por el Centro hasta que se hizo de noche. (<em>After that I walked around downtown until it was late).</em>
El último día, decidí tomar un vino en el bar del hotel y después descansé. <em>(Last day, I decided to take a glass of wine at the hotel bar and then I rested).</em>
Me gustó mucho. <em>(I liked it a lot).</em>
Los quiero mucho, <em>(I love you so much.)</em>
Su hija". <em>(Your daughter.)</em>
Explanation:
<em>Mexico</em> is one of the most beautiful places in the world and therefore one of the Top 10 in the list of most visited places in the planet. Therefore, this is the country I chose. In Mexico City there are some mosts when visiting, such as <em>The monument of Revolution, the Latin American Tour, Paseo de la Reforma Street, and Downtown</em>, thus I mentioned them in the letter. The hotel Marquis is one of the most emblematic hotels in the country, this is why it is the one mentioned in the letter.
The letter has to be written in the <em><u>first person singular</u></em> as if myself would be writing it. And as I am a woman I wrote it in the feminine form, that is why some verbs agree with this form too (such as "<em>estuve hospedada</em>"). I addressed the letter to my parents (which is a plural third person) and that is why the initial greeting and the final farewell are aimed to the plural third person.
As the instructions establishes that the letter must be in the past tense, that is why all the verbs that indicate actions of the protagonist of the letter (first person singular) are highlighted and agree in number and person.