From what I understand the L shaped halls are both 18 feet in length. One L has an entrance door across from a window & opening to a balcony balcony and 3 bedroom doors staggered on both sides and the other L is connected to an open kitchen. The window-balcony area sounds beautiful and that is the focal point for that part of the hallway. These hall floors and walls are going to receive a lot of use and abuse from those going to & from bedrooms and kitchen. The flooring should be of good quality so it will stand up to the heavy traffic. Carpeting, hard wood, slate or tile: it's your choice but again quality is key. Carpeting in the hall helps decrease noise & is soft underfoot and I would choose carpeting. I like a plain color, with a pattern cut pile so it does not show wear and tear. I've had good luck with Stainmaster. I would train myself and family members to remove shoes & wear slippers in the house. This will help keep carpet clean. http://stainmaster.com/page/our-carpets/styles/pattern-cut-pile The walls will receive hard use, too, so they might be painted in a quality washable paint (eggshell?). Long halls can look a little tunnel-like: place a wall-art at the end of any long hall. The wall art at the end of the hall will seem to shorten the tunnel-effect and will make the hall more interesting. Choose a rather large piece of art that is bright and cheery. Here is a photo You could also buy a wall decal for the end of the hall: you place the decal on the wall and it also comes off with no residue. This decal is large bright and fun, but this company (& other decal companies) have many to choose from http://dalidecals.com/Framed-Wild-Flowers-Printed-Wall-Decals-Stickers-Graphics.html It seems people will be passing the bedrooms on the way to the kitchen quite often. If you're having guests, think of keeping the bedroom doors closed, in case the bedrooms are a mess. ;-)

But if you simply cannot remove the washbasin, replace this configuration with a decorative countertop version - a nice stone counter and earthenware basin as shown in the pictures. A more econimical, but not so pretty option is to leave everything as it is and add a low partition about 3'6" high on the left that shields the washbasin from view. You can continue the tiling (ideally a faux brick or slate- NOT white) across the niche on all three walls. Paint the door in a dark shade too -like charcoal grey so that it does not look bathroom-y. Add a wooden moulding around the door frame and paint

Wouldn't ceramic tiles wood finish, laid in planks of 6" x 24" solve the problem? Not my go-to choice though. Another option would be to use texture paint (with larger granules) in a deep chocolate colour

Hey Erica! How about something like this? This Sea Salt by Sherwin Williams, for a beachy vibe, go with the lightest of oak or perhaps a tile similar to the one in the picture. Honestly I love a good slate Gray for tiles as well, but that's a statement look which cannot stand on its own. the earthiness of s the slate Gray or terracotta needs to complimented through the rest of the home! for paint colours, you could also take a look at Antique Glass from Benjamin Moore for a darker shade or Ocean spray from the green spectrum of BM