Of course the old city of Sukhothai (the first ancient capital of Siam) is not changing but the new city of Sukhothai is changing for the better. In the old days the main area to stay / sleep was in the new city near the bridge. Well that area is still within the city the most used area with about 6 guesthouses and a few restaurants. Although all over town are also a few guesthouses and hotels. But in the old days there were almost no hotels near the old city (Historical Park) and that has changed a lot. There are many new & good guesthouses and hotels now. And some restaurants also. Luckily Sukhothai has not yet become like many other bigger places in Thailand with shopping malls, Burger Kings, etc. But there is now a BigC (with restaurants) and in town are some modern pubs, restaurants and coffee shops. There even is a an all street with pubs and restaurants ... have a look at Soi Damrong (north side of the new city).