We've been looking at a house which seems like is good value for its price and size. We put in a offer that was accepted. We was then told it was a house with a 999 year lease. We was a bit weary but was assured the property can be bought and sold just like a freehold property. Having never dealt with anything like this, are there any pitfalls or dangers we should look out for or will it be safe just to go ahead?