This is not an easy question to answer. Usually, an enlargement will be framed and either hung on the wall or placed on the bookshelf. Whilst the colour print process has taken great steps forward in recent years, if the print is put in direct (or even filtered) sunlight, the likelihood is that the colours will fade over time. You may wish to consider black and white enlargements. There is less chance of print degradation and experience suggests that a black and white print retains more “timelessness” than a colour print, particularly if it’s a photo you will see every day.