It does have the look of an Eragrostis, but has more narrow leaves than typical of the E. spectabilis specimens I've seen.

Thank you Jekeesl :)

You might want to check into the Pink Muhly grasses (Muhlenbergia capillaris). I don't know where you live; the popularity level of specific grasses are sometimes regionally different. Pink Muhly, which appears similar to the plant in your photo, are currently with seed heads in Southern California.

Thank you gyr_falcon I thought it could be the Pink Muhly as well. I'm in Portugal and I don't think its a popular grass here

I agree with Muhlenbergia, a real favorite of mine and seen to its best effect when planted in swaths or groups.