The opening of a landmark Bristol hotel development has been set back a further three months.

The Radisson SAS hotel on Broad Quay, in the city centre was hit with problems last May when heavy rainfall damaged the top eight floors of the 18-storey development.

The new 176-room hotel, which was formally the Bristol and West building, was originally set to open last summer but this date was set back to October 2008.

In October, the Bristol Post reported that the water damage would cost the owners of the building £200,000 to repair, and that it would open another three months later in February.

But the owners of the building told the hotel company just before Christmas that it would now not be ready to open until May 15.

Kathrin Cockhill, director of sales and marketing at the hotel, said: "Back in May, water damage took out the top eight floors of the building. That set things back a lot and we are looking now to open in May."

The problem centred on the rainwater outlets on the roof which Miller Construction, the company behind the transformation of the tower, said were "overpowered" by the rains.

The outlets surround the hotel's showpiece apartment penthouse suite at the top of the hotel.

The development of the site, known as Broad Quay, includes 130 private residential apartments, 30 affordable flats and four shops – but these were unaffected by the water damage.

The Bristol and West building used to be regarded as one of the ugliest buildings in Bristol.

Its £20-million conversion into a four-star business hotel is turning the old tower into a glass tower with apartments built either side.

A variety of glazing systems are being used in the tower, with darker glass being used nearer the ground and lighter panels used towards the top, aiming to give the illusion of the tower disappearing into the sky.

Construction of the striking blue glass building has been dogged with bad luck.

In July, a lift engineer was critically injured after he was hit by a falling object while working at the bottom of a shaft.

And in December 2007, cranes installing the 1,600 glass panels surrounding the new hotel had to stop for four days as gale force winds battered the whole building.