As delightful and worthwhile as it is, Hoi An is still quite cheap, even by Vietnamese standards. Hotel standards are quite high for the star levels you’ll see, with even 1-star hotels usually having air-con, cable TV, fridge, and sometimes even in-room Wi-Fi included. If you are up for a bit of a splurge then you can find a place with manicured grounds and/or a swimming pool.
Food and drinks are highlights of a visit to Hoi An, and quality tends to be high in the many restaurants with English-language menus that cater to tourists. You could save a bit of money eating along with locals in the places with plastic furniture, but at these prices most tourists are happy to go to places where they are more relaxed and comfortable.
Beer in particular is very cheap, with the local La Rue lager usually the cheapest option, but the other major lagers as well as the Asian-brewed Heineken are here too. Wine isn’t quite as much of a bargain by comparison, but mixed drinks start at reasonable prices for those who don’t like beer. The Vietnamese vodka is also easy to find by the bottle at shockingly low prices.
Tours of My Son and other nearby sites are available everywhere, including your hotel front desk and many travel agencies throughout the city center. Prices tend to be standard at each place, but bargaining can’t hurt.