Guess it depends where your property is as to how many weeks occupancy you get. In a good location I'd hope to get at least 50% occupancy (and more if the apartments are marketed with some of the main tour operators)and around £200 a week for a 2 bed apartment, maybe a bit more. You may have to pay up to 20% for a decent management company. Then remember there's officially local tax to pay (not that I think anyone does), but anyway, money earned abroad is taxable in the UK. Depending on your agreement, you may also have to pay for the electric and water used in the apartment, plus repair bills, public liability insurance etc etc. Generally in the Hurghada area occupancy levels for hotels are pretty good (over 80% in El Gouna), so providing the flights are available theres certainly the potential.