I HAVE heard and read some negative remarks regarding the newly-opened Mid-Levels escalator. I quote from one issue of a local publication, ''It (the escalator) looks like a cement cage and it's spoilt the area . . . it's a complete waste of money''. However, now that the escalator is in operation, it appears to be quite an attraction. Many have ventured out to try this original and modern architectural development. I am a resident of Mid-Levels. I do not find the escalator an eyesore. Maybe before making any further criticisms, people should consider the conveniences it is providing for many residents like myself who live in the upper parts of Central. It is obviously not a ''complete waste of money''. ELAINE LEE Mid-Levels