It is not a great hotel especially if you compare it to all the 4 and 5 stars around there. As far as the beach is concerned, there is a public beach in Sharm that is perfectly safe but quite small. The floating jetty are only used when you go on a boat trip.
If you can change to another hotel, do. If you are in England check with Thomson who have good deals with the Sonesta Club, 4 stars, excellent standards with their own beach etc for reasonable prices depending on the season (before May/June when prices really go up).
Don't worry too much, there are so many things to do out there and places you can eat paying very little that I would focus on getting the most you can through excursions etc and not worry too much about the hotel if you can't change it.
Enjoy yourselves!
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Now, if that was me, I would put washing up liquid on the jetty and settle down on the beach to watch the fun! LOL