What is the fine-grained topic of the following text: "We Had A walk in shower installed where we once had a tub Top tier had the whole project completed on time (2days) The folks that did the work did a excellent job I recommend Top Tier 100% We have some work in the future needing done and certainly will be using Top Tier again." Only return the topic.
Installation and review of a walk-in shower by Top Tier company