The embodiments herein relate to methods, an access point and a network node for service quality assessment in a network environment. According to a method, the access point receives, from a user equipment, a request for a service; and determines a service quality identifier based on the requested service. The access point sends, to a network node of a service provider, the service request including the service quality identifier. The network node analyzes the received service quality identifier for determining whether or not the requested service can be supported. If the requested service can be supported, the network node transmits a response to the user equipment informing that the service can be supported over the access point. If the requested service cannot be supported, the network node transmits a response to the user equipment instructing the user or the user equipment to select another access point.