Answer
The examples cite different figures: 42,000 pesos plus gastos comunes, or about 50,000 pesos in total, as well as about $1,500 for a one-bedroom apartment in Uruguay or Montevideo.
The range reflects the fact that the Russian term “one-room apartment” does not always match local terminology. In listings, the number of dormitorios matters more: a one-bedroom apartment usually has a separate living room or shared living area, and the price depends on the neighborhood and condition.
When budgeting, separate alquiler from gastos comunes and utilities. A cheap listing can become expensive once building maintenance, heating, internet, and one-time payments involved in arranging the rental are added, especially in the first month of residence.