'I've got a case in court in the morning," wails lawyer Paul at frequent intervals. He has just puffed up five flights of stairs to the tiny apartment that his new wife has found in New York. As yet there is no furniture ("Bloomingdale's have promised to deliver by 5.30," wife Corrie announces brightly). Worse is to come: the bedroom is only large enough to take a single bed.

Then there's the neighbours. "Mr and Mrs S.Bosio, who live downstairs, happen to be the same sex, but no-one knows which sex," Corrie has discovered upon enquiring at the local drugstore. The upstairs neighbour soon appears: Victor Valasco, is a first-class scrounger, quick to try and convince the young couple that he hasn't a cent to his name. One cannot help but notice, however, that his expensive-looking shoes are brand new, they're not even scuffed underneath.

On these characters, plus Corrie's redoubtable mother, Neil Simon builds his comedy Barefoot in the Park. First produced in 1963 (and when the furniture finally arrives, we discover that Sonning designer Tony Eden has kept faithfully to period), the play hasn't dated at all, with Simon's comments on American marital life remaining as sharp as ever they were. "You'll have a happy marriage," mother assures her daughter and son-in-law at one point, "Just like two out of every ten couples".

To make them work, Neil Simon's plays need sharp, fizzy direction and performance. Sonning has assembled an excellent ensemble cast, and director Ron Aldridge has paced the production to perfection - even the stagehands have been carefully timed and choreographed as, dressed as deliverymen, they bring the furniture into the flat.

On the acting front, Maxine Gregory carries the maximum load as Corrie. She must be sexy and effervescent from morning till night, yet also possessed of a sharp, impulsive temper - the set contains three doors, all of which get slammed on many occasions. Gregory literally throws herself into the role, and also manages to maintain quite an impressive American accent through all the quick-fire exchanges of dialogue.

Charles Davies provides a steady foil as her dull-as-ditchwater husband, duly showing towards the end that a very different character actually lurks beneath the grey lawyer's suit. Jan Waters supplies a splendidly robust mother - director Aldridge rewards her by giving her one of the most hilariously spectacular entrances I have ever seen - and Philip York employs a cod-exotic mid-European accent to good effect as Valasco. Altogether this production shows The Mill at Sonning at its best.

Barefoot in the Park continues at The Mill at Sonning until May 12. Box office: 0118 969 8000.