I stayed in several different places in Yerevan on a recent visit. While the decor at the Shirak is a little dated it's in a great location (central yet quiet), staff are helpful and the prices are significantly lower than for many other places in the city. Breakfast was also noteworthy. Since it's a relatively large hotel they are able to provide a large number of options without fear of wastage. In smaller places you may just get cheese, salami, bread and jam.
Since it was a long trip I was very pleased when I was able to arrange for the maid who cleaned my room to do some laundry for me.
