Here are some possible ways to express this in Spanish, depending on the context:
If you want to say something is *generally* agreeable:
* "Es agradable." (It is agreeable.)
* "Es algo agradable." (It is something agreeable.)
* "Es agradable de ver/escuchar/leer, etc." (It is agreeable to see/hear/read, etc.)
If you want to emphasize the pleasantness of something specific:
* "Lo agradable es..." (The agreeable thing is...)
* "Lo que es agradable es..." (What is agreeable is...)
* "Es muy agradable..." (It is very agreeable...)
* "Resulta agradable..." (It turns out to be agreeable...)
If you want to express a personal opinion about something being agreeable:
* "Me parece agradable." (It seems agreeable to me.)
* "Encuentro agradable..." (I find agreeable...)
* "Creo que es agradable." (I think it is agreeable.)
Remember to use the appropriate tense and verb conjugation based on the context of your sentence.