William Congreve lived and wrote in the 17th century (1670-1729). His play Love for Love is a part of what is known as Restoration Drama, so-called because of the restoration of the monarchy to England after the death of Oliver Cromwell. The restored king, Charles II, enjoyed theater and encouraged the production of light-hearted, often risque, comedies.
At the end of the list of characers, Dramatis Personae, there is a note that the scene is London.
The Prologue and the Epilogue may be confusing because of the note that they are spoken at the "opening of the new house." Those notes refer to the opening of the new theatre building in which the play was performed.