9 Ways to Maximize Small Bathroom Design
I know you said you didn't want a realtor but I do know someone who is good. Her name is Pam Hunt and she is with William E. Wood.
Otherwise I would check out interior designers. They could make suggestions and outline some finer details that could help you stage your home.
In the meantime start packing away those personal momentos and pictures. Clear and clean the walls. Go with a neutral paint color throughout the house. Oyster by Behr is a classic. Start getting rid of clutter. If you haven't worn it in 3 years or used it in 5....pitch it. Depending on how long you have lived in your home the accumulation of "things" could be tremendous. Donate your unwanted and unused to a thrift store. It is tax deductible. Get appliances off the counters in the kitchen. Buyers want to imagine "their" things sitting there. Get rid of heavy drapes and go with sheers consistent throughout the house. Make rooms look larger by chucking some furniture. Sell it or put it in storage until you have moved. How is the floor? Carpet removed may reveal beautiful hardwoods that are in high demand right now. Pets? Get someone to come give you the "sniff" test. We grow acustomed to the smell of our house and might not recognize pet stinkies. Make everything shine by cleaning thoroughly, and let in the light. Bright rooms are inviting. Dark rooms are depressing. These things will give you a head start and clear your mind for some good ides. Good luck with your interior designer.
I have lost count of how many kitchens I have remodeled and I prefer Brushed Stainless Steel sinks. Polished will show scratched more and with the brushed finish if you wipe with the grain with a milld scrub pad and an old time product called Bar Keepers Friend the look good almost forever. If you have any concerns about scratches in the bottom you can use a grid when needed, most sink manufacturers make them for their sinks. You say you have stains in a solid surface siink and it is probably the older generation. The newer ones have a high stone content to the mix and are less prone to this but I still prefer stainless.